In October 2013, there was an outbreak of

Zika fever Zika fever, also known as Zika virus disease or simply Zika, is an infectious disease caused by the Zika virus. Most cases have no symptoms, but when present they are usually mild and can resemble dengue fever. Symptoms may include fever, red ...

French Polynesia )Territorial motto: ( en, "Great Tahiti of the Golden Haze") , anthem = , song_type = Regional anthem , song = "Ia Ora 'O Tahiti Nui" , image_map = French Polynesia on the globe (French Polynesia centered).svg , map_alt = Location of French ...

, the first outbreak of several Zika outbreaks across

Oceania Oceania (, , ) is a geographical region that includes Australasia, Melanesia, Micronesia, and Polynesia. Spanning the Eastern and Western hemispheres, Oceania is estimated to have a land area of and a population of around 44.5 million ...

. With 8,723 cases reported, it was the largest outbreak of Zika fever before the outbreak in the Americas that began in April 2015. An earlier outbreak occurred on Yap Island in the

Federated States of Micronesia The Federated States of Micronesia (; abbreviated FSM) is an island country in Oceania. It consists of four states from west to east, Yap, Chuuk, Pohnpei and Kosraethat are spread across the western Pacific. Together, the states compr ...

in 2007, but it is thought that the 2013–2014 outbreak involved an independent introduction of the Zika virus from

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland ...

. Investigators suggested that the outbreaks of mosquito-borne diseases in the

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...

from 2012 to 2014 were "the early stages of a wave that will continue for several years", particularly because of their vulnerability to

infectious diseases An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable di ...

stemming from isolation and immunologically naive populations.

Epidemiology

French Polynesia

The first Zika outbreak started in French Polynesia in October 2013, with cases reported in the

Society A society is a group of individuals involved in persistent social interaction, or a large social group sharing the same spatial or social territory, typically subject to the same political authority and dominant cultural expectations. Soc ...

Marquesas The Marquesas Islands (; french: Îles Marquises or ' or '; Marquesan: ' (North Marquesan) and ' (South Marquesan), both meaning "the land of men") are a group of volcanic islands in French Polynesia, an overseas collectivity of France in t ...

and

Tuamotu Islands The Tuamotu Archipelago or the Tuamotu Islands (french: Îles Tuamotu, officially ) are a French Polynesian chain of just under 80 islands and atolls in the southern Pacific Ocean. They constitute the largest chain of atolls in the world, extendin ...

Tahiti Tahiti (; Tahitian ; ; previously also known as Otaheite) is the largest island of the Windward group of the Society Islands in French Polynesia. It is located in the central part of the Pacific Ocean and the nearest major landmass is Austra ...

Mo'orea Moorea ( or ; Tahitian: ), also spelled Moorea, is a volcanic island in French Polynesia. It is one of the Windward Islands, a group that is part of the Society Islands, northwest of Tahiti. The name comes from the Tahitian word , meaning " ...

Raiatea Raiatea or Ra'iatea ( Tahitian: ''Ra‘iātea'') is the second largest of the Society Islands, after Tahiti, in French Polynesia. The island is widely regarded as the "centre" of the eastern islands in ancient Polynesia and it is likely that th ...

Tahaa Taha’a (sometimes spelled as "Tahaa") is an island located among the western group, the Leeward Islands, of the Society Islands in French Polynesia, an overseas territory of France in the Pacific Ocean. The islands of Taha’a and neighboring ...

Bora Bora Bora Bora (French: ''Bora-Bora''; Tahitian: ''Pora Pora'') is an island group in the Leeward Islands. The Leeward Islands comprise the western part of the Society Islands of French Polynesia, which is an overseas collectivity of the French R ...

Nuku Hiva Nuku Hiva (sometimes spelled Nukahiva or Nukuhiva) is the largest of the Marquesas Islands in French Polynesia, an overseas country of France in the Pacific Ocean. It was formerly also known as ''Île Marchand'' and ''Madison Island''. Herman ...

and

Arutua Arutua, or Ngaru-atua is an atoll in the Tuamotu group in French Polynesia. It is located 40 km SW of Rangiroa. The closest land is Apataki Atoll, only 16 km to the East. Arutua Atoll has a roughly pentagonal shape. Length , width ...

. The outbreak ran concurrently with an outbreak of

dengue fever Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection. These may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic ...

. In December 2013, an

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

traveler to Mo'orea was diagnosed with Zika virus infection in

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

after an 11-day history of symptoms, becoming the first American tourist to be diagnosed with Zika. A

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

tourist returning to

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...

was also diagnosed with Zika virus infection by the National Institute of Infectious Diseases after visiting Bora Bora, becoming the first imported case of Zika fever in Japan. By February 2014, it was estimated that more than 29,000 people with Zika-like symptoms had sought medical care, roughly 11.5% of the population, with 8,503 suspected cases. Of 746 samples tested at the in Tahiti by 7 February, 396 (53.1%) were confirmed as containing the Zika virus by

RT-PCR Reverse transcription polymerase chain reaction (RT-PCR) is a laboratory technique combining reverse transcription of RNA into DNA (in this context called complementary DNA or cDNA) and amplification of specific DNA targets using polymerase chai ...

. Two further cases of Zika virus infection were imported into Japan, and on 25 February, the

Norwegian Institute of Public Health The Norwegian Institute of Public Health (NIPH) (Norwegian: ''Folkehelseinstituttet''; FHI) is a Norwegian government agency and research institute, and is Norway's national public health institute. It is subordinate to the Ministry of Health and ...

reported that a traveler returning to

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of ...

from Tahiti was confirmed to have a Zika virus infection. By March 2014, the outbreak was declining in the majority of the islands, and by October the outbreak had abated. A total of 8,723 suspected cases of Zika virus infection were reported, as well as more than 30,000 estimated clinical visits and medical consultations due to concerns about Zika. The true number of Zika cases was estimated at more than 30,000.

New Caledonia

Zika spread westwards from French Polynesia to

New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...

, where imported cases from French Polynesia were reported from November 2013 onwards. The first indigenous case was confirmed in January 2014 by the

Pasteur Institute The Pasteur Institute (french: Institut Pasteur) is a French non-profit private foundation dedicated to the study of biology, micro-organisms, diseases, and vaccines. It is named after Louis Pasteur, who invented pasteurization and vacc ...

. On 10 February, there were 64 reported cases of Zika in the communities of Greater

Nouméa Nouméa () is the capital and largest city of the French special collectivity of New Caledonia and is also the largest francophone city in Oceania. It is situated on a peninsula in the south of New Caledonia's main island, Grande Terre, and ...

Dumbéa Dumbéa (, ) is a commune in the suburbs of Nouméa in the South Province of New Caledonia, an overseas territory of France in the Pacific Ocean. The population of the commune was 35,873 according to the 2019 census. From 1904 to 1940 the town w ...

, and

Ouvéa Ouvéa () or Uvea is a commune in the Loyalty Islands Province of New Caledonia, an overseas territory of France in the Pacific Ocean. The settlement of Fayaoué , on Ouvéa Island, is the administrative centre of the commune. Geography Ouv ...

, of which 30 were imported from French Polynesia. By 26 February 2014, there were 140 confirmed cases of Zika in New Caledonia, including 32 imported cases. The outbreak peaked in April, and by 17 September, the number of confirmed cases had gone up to 1,400, of which 35 were imported. During the same time period, there were also outbreaks of chikungunya fever and dengue fever.

Cook Islands

In February 2014, an outbreak of Zika was reported in the

Cook Islands ) , image_map = Cook Islands on the globe (small islands magnified) (Polynesia centered).svg , capital = Avarua , coordinates = , largest_city = Avarua , official_languages = , lan ...

, to the southwest of French Polynesia. In March, an

Australian Australian(s) may refer to: Australia * Australia, a country * Australians, citizens of the Commonwealth of Australia ** European Australians ** Anglo-Celtic Australians, Australians descended principally from British colonists ** Aboriginal A ...

woman was diagnosed with a Zika virus infection by

Queensland Health Queensland Health is the name of the overall public health service in the state of Queensland, Australia. Like all other states and territories in Australia, the Queensland Government provides low- or no-cost primary, secondary, and tertiary ...

following a recent trip to the Cook Islands, becoming the second reported case of Zika diagnosed in

Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...

. Nearly 40 other cases of Zika virus infection were imported into

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island coun ...

. By 29 May, the outbreak had ended, with 50 confirmed and 932 suspected cases of Zika virus infection.

Easter Island

By March 2014, there were one confirmed and 40 suspected cases of Zika virus infection on

Easter Island Easter Island ( rap, Rapa Nui; es, Isla de Pascua) is an island and special territory of Chile in the southeastern Pacific Ocean, at the southeasternmost point of the Polynesian Triangle in Oceania. The island is most famous for its nearl ...

. The Zika virus was suspected to have been carried to the island by a tourist from French Polynesia during the annual Tapati festival, held between January and February.

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the eas ...

an health authorities decided against issuing a health alert, saying that the outbreak had been contained and was under control, and advised travelers to take precautions against mosquito bites. By the end of the year, 173 cases of Zika had been reported, but all of the cases were described as "mild". On 24 September 2014, a

Belgian Belgian may refer to: * Something of, or related to, Belgium * Belgians, people from Belgium or of Belgian descent * Languages of Belgium, languages spoken in Belgium, such as Dutch, French, and German *Ancient Belgian language, an extinct languag ...

woman flying to Easter Island from Tahiti was diagnosed with Zika virus infection after having previously received

ambulatory care Ambulatory care or outpatient care is medical care provided on an outpatient basis, including diagnosis, observation, consultation, treatment, intervention, and rehabilitation services. This care can include advanced medical technology and proce ...

in Tahiti, and was taken to

Hanga Roa Hanga Roa (; rap, Haŋa Roa, Rapa Nui pronunciation: �ha.ŋa ˈɾo.a (Spanish: ''Bahía Larga'') is the main town, harbour and seat of Easter Island, a municipality of Chile. It is located in the southern part of the island's west coast, in th ...

Hospital for evaluation.

LAN Airlines LATAM Airlines Chile (formerly LAN Airlines and LAN-Chile) is an airline based in Santiago, Chile, one of the founders of LATAM Airlines Group, Latin America's largest airline holding company. The main hub is Arturo Merino Benítez Internationa ...

undertook operations to ensure other people on the woman's flight were not infected, and local health authorities stated that Zika was not a risk for people on the island.

Transmission

Zika is a

mosquito-borne disease Mosquito-borne diseases or mosquito-borne illnesses are diseases caused by bacteria, viruses or parasites transmitted by mosquitoes. Nearly 700 million people get a mosquito-borne illness each year resulting in over 725,000 deaths. Diseases tr ...

. Four aedine species of

mosquito Mosquitoes (or mosquitos) are members of a group of almost 3,600 species of small flies within the family Culicidae (from the Latin ''culex'' meaning " gnat"). The word "mosquito" (formed by ''mosca'' and diminutive ''-ito'') is Spanish for "li ...

are found in the

, including ''

Aedes aegypti ''Aedes aegypti'', the yellow fever mosquito, is a mosquito that can spread dengue fever, chikungunya, Zika fever, Mayaro and yellow fever viruses, and other disease agents. The mosquito can be recognized by black and white markings on its l ...

'', widespread across the

South Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

, and ''

Aedes polynesiensis ''Aedes polynesiensis'' (also known as the Polynesian tiger mosquito) is only found in the South Pacific on the islands of Austral Islands, Cook Islands, Ellice Islands, Fiji Islands, Hoorn Islands, Marquesas Islands, Pitcairn Island, Samoa ...

'', found between

Fiji Fiji ( , ,; fj, Viti, ; Fiji Hindi: फ़िजी, ''Fijī''), officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about north-northeast of New Zealand. Fiji consis ...

and French Polynesia. ''Aedes aegypti'' has previous been identified as a wild

vector Vector most often refers to: *Euclidean vector, a quantity with a magnitude and a direction *Vector (epidemiology), an agent that carries and transmits an infectious pathogen into another living organism Vector may also refer to: Mathematic ...

of the Zika virus, and preliminary results from the Institut Louis-Malardé have supported the main role of ''Aedes aegypti'' and probable role of ''Aedes polynesiensis'' in spreading the Zika virus. People infected with the Zika virus traveling to other Pacific islands could transmit the disease to local mosquitoes that bit them. The infected mosquitoes could then go on to spread Zika among the local mosquito population, and thence cause outbreaks of Zika among local people. A study conducted between November 2013 and February 2014 in French Polynesia found that 2.8% of blood donors tested positive for the Zika virus, of which 3% were asymptomatic at the time of blood donation. 11 of the infected donors studied subsequently reported symptoms of Zika virus infection within 10 days. This indicated a potential risk of transmission of the Zika virus through

blood transfusion Blood transfusion is the process of transferring blood products into a person's circulation intravenously. Transfusions are used for various medical conditions to replace lost components of the blood. Early transfusions used whole blood, but mo ...

s, but there are no confirmed cases of this occurring.

Nucleic acid test A nucleic acid test (NAT) is a technique used to detect a particular nucleic acid sequence and thus usually to detect and identify a particular species or subspecies of organism, often a virus or bacterium that acts as a pathogen in blood, tissu ...

ing of blood donors was implemented in French Polynesia from 13 January 2014 onwards to prevent unintended transmission of the Zika virus.

Possible links to neurological syndromes, infant microcephaly and other disorders

A concurrent increase in neurological syndromes and

autoimmune In immunology, autoimmunity is the system of immune responses of an organism against its own healthy cells, tissues and other normal body constituents. Any disease resulting from this type of immune response is termed an "autoimmune disease". ...

complications was first reported in early 2014. Of the 8,723 cases of Zika reported in French Polynesia, complications related to neurological signs of infection were noted in 74 people, including

Guillain–Barré syndrome Guillain–Barré syndrome (GBS) is a rapid-onset muscle weakness caused by the immune system damaging the peripheral nervous system. Typically, both sides of the body are involved, and the initial symptoms are changes in sensation or pain oft ...

(GBS) in 42 people, as well as

encephalitis Encephalitis is inflammation of the brain. The severity can be variable with symptoms including reduction or alteration in consciousness, headache, fever, confusion, a stiff neck, and vomiting. Complications may include seizures, hallucinations ...

meningoencephalitis Meningoencephalitis (; from ; ; and the medical suffix ''-itis'', "inflammation"), also known as herpes meningoencephalitis, is a medical condition that simultaneously resembles both meningitis, which is an infection or inflammation of the menin ...

paraesthesia Paresthesia is an abnormal sensation of the skin (tingling, pricking, chilling, burning, numbness) with no apparent physical cause. Paresthesia may be transient or chronic, and may have any of dozens of possible underlying causes. Paresthesias ar ...

, facial paralysis or

myelitis Myelitis is inflammation of the spinal cord which can disrupt the normal responses from the brain to the rest of the body, and from the rest of the body to the brain. Inflammation in the spinal cord, can cause the myelin and axon to be damaged re ...

in 25. However, there was only one laboratory confirmation of Zika virus infection using RT-PCR in patients with GBS. Among the initial 38 cases of GBS found in suspected Zika cases, 73% were male and infected individuals were aged between 27 and 70. This was highly unusual, as prior to the Zika outbreak there had only been 21 cases of GBS in French Polynesia between 2009 and 2012. 18 people newly diagnosed with GBS were admitted to the local

rehabilitation Rehabilitation or Rehab may refer to: Health * Rehabilitation (neuropsychology), therapy to regain or improve neurocognitive function that has been lost or diminished * Rehabilitation (wildlife), treatment of injured wildlife so they can be retur ...

centre, putting heavy strain on the limited

intensive care Intensive care medicine, also called critical care medicine, is a medical specialty that deals with seriously or critically ill patients who have, are at risk of, or are recovering from conditions that may be life-threatening. It includes pro ...

resources available. On 24 November 2015, health authorities in French Polynesia reported that there had been an unusual increase in the number of cases of

central nervous system The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord. The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all p ...

malformations in fetuses and infants during 2014–2015, coinciding with the outbreak of Zika on the islands. These malformations included 12 with fetal cerebral malformations or polymalformative syndromes, which includes

microcephaly Microcephaly (from New Latin ''microcephalia'', from Ancient Greek μικρός ''mikrós'' "small" and κεφαλή ''kephalé'' "head") is a medical condition involving a smaller-than-normal head. Microcephaly may be present at birth or it ...

, and another 5 with

brainstem The brainstem (or brain stem) is the posterior stalk-like part of the brain that connects the cerebrum with the spinal cord. In the human brain the brainstem is composed of the midbrain, the pons, and the medulla oblongata. The midbrain is ...

dysfunction and absence of

swallowing Swallowing, sometimes called deglutition in scientific contexts, is the process in the human or animal body that allows for a substance to pass from the mouth, to the pharynx, and into the esophagus, while shutting the epiglottis. Swallowing i ...

, much greater than the annual average of one case. None of the

pregnant Pregnancy is the time during which one or more offspring develops ( gestates) inside a woman's uterus (womb). A multiple pregnancy involves more than one offspring, such as with twins. Pregnancy usually occurs by sexual intercourse, but ca ...

women involved had

medical signs Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition. A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showi ...

of Zika virus infection, but four who were tested gave positive results in

IgG Immunoglobulin G (Ig G) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. IgG molecules are created and released by plasma B cells. Each IgG an ...

serology Serology is the scientific study of serum and other body fluids. In practice, the term usually refers to the diagnostic identification of antibodies in the serum. Such antibodies are typically formed in response to an infection (against a given mic ...

assay An assay is an investigative (analytic) procedure in laboratory medicine, mining, pharmacology, environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence, amount, or functional activity of ...

s for flaviviruses, suggesting an

asymptomatic In medicine, any disease is classified asymptomatic if a patient tests as carrier for a disease or infection but experiences no symptoms. Whenever a medical condition fails to show noticeable symptoms after a diagnosis it might be considered a ...

Zika virus infection during pregnancy. French Polynesian health authorities

hypothesis A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous obse ...

e that these abnormalities are associated with Zika if pregnant women are infected during the first or second trimester of pregnancy. Dr. Didier Musso, an

infectious disease An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable di ...

specialist at the Institut Louis-Malardé, said that there was "very high suspicion" of a link between microcephaly and the Zika virus outbreak in French Polynesia, but added that further research was still needed. The two cases of Zika virus infection imported into Japan from French Polynesia in February 2014 showed signs of

leukopenia Leukopenia () is a decrease in the number of leukocytes (WBC). Found in the blood, they are the white blood cells, and are the body's primary defense against an infection. Thus the condition of leukopenia places individuals at increased risk of ...

(decreased levels of

white blood cell White blood cells, also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from mult ...

s) and moderate

thrombocytopenia Thrombocytopenia is a condition characterized by abnormally low levels of platelets, also known as thrombocytes, in the blood. It is the most common coagulation disorder among intensive care patients and is seen in a fifth of medical patients a ...

(decreased levels of

platelet Platelets, also called thrombocytes (from Greek θρόμβος, "clot" and κύτος, "cell"), are a component of blood whose function (along with the coagulation factors) is to react to bleeding from blood vessel injury by clumping, thereby i ...

s).

Aftermath

Brazilian researchers have suggested that a traveler infected with the Zika virus arrived in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

from French Polynesia, leading to the ongoing Zika virus outbreak that began in 2015. This may have occurred during the

2014 FIFA World Cup The 2014 FIFA World Cup was the 20th FIFA World Cup, the quadrennial world championship for list of men's national association football teams, men's national Association football, football teams organised by FIFA. It took place in Brazil from ...

tournament, or shortly after, based on

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups ...

DNA analysis of the virus. French researchers have speculated that the virus arrived in August 2014, when canoeing teams from French Polynesia, New Caledonia, the Cook Islands and Easter Island attended the Va'a World Sprint Championships in

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

. Between 1 January and 20 May 2015, a further 82 confirmed cases of Zika were reported in New Caledonia, including ten imported cases. In early 2015, two cases of Zika virus infection were reported in travelers returning to

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...

from French Polynesia. In February 2015, an outbreak of Zika began in the

Solomon Islands Solomon Islands is an island country consisting of six major islands and over 900 smaller islands in Oceania, to the east of Papua New Guinea and north-west of Vanuatu. It has a land area of , and a population of approx. 700,000. Its capit ...

. The Ministry of Health and Medical Services reported the first laboratory confirmation of Zika virus infection on 12 March 2015, and by 3 May 302 cases of Zika had been reported, with the number of new cases steadily decreasing. On 27 April 2015, the Ministry of Health of

Vanuatu Vanuatu ( or ; ), officially the Republic of Vanuatu (french: link=no, République de Vanuatu; bi, Ripablik blong Vanuatu), is an island country located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of ...

announced that blood samples collected prior to

Cyclone Pam Severe Tropical Cyclone Pam was the second most intense tropical cyclone of the South Pacific Ocean in terms of sustained winds and is regarded as one of the worst natural disasters in the history of Vanuatu. A total of 15–16 people lost ...

in March were confirmed to contain the Zika virus. The Ministry of Health advised people to consult medical aid if they experienced a high fever with no obvious cause, and recommended communities clean up places where mosquitoes could lay eggs. The introduction of the Zika virus was thought to be linked to frequent travel between New Caledonia and Vanuatu. Local transmission of the Zika virus by mosquitoes has been reported in the

Polynesia Polynesia () "many" and νῆσος () "island"), to, Polinisia; mi, Porinihia; haw, Polenekia; fj, Polinisia; sm, Polenisia; rar, Porinetia; ty, Pōrīnetia; tvl, Polenisia; tkl, Polenihia (, ) is a subregion of Oceania, made up of ...

n islands of

American Samoa American Samoa ( sm, Amerika Sāmoa, ; also ' or ') is an unincorporated territory of the United States located in the South Pacific Ocean, southeast of the island country of Samoa. Its location is centered on . It is east of the Internatio ...

Samoa Samoa, officially the Independent State of Samoa; sm, Sāmoa, and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands ( Savai'i and Upolu); two smaller, inhabited islands ( Manono and Apolima); ...

, and

Tonga Tonga (, ; ), officially the Kingdom of Tonga ( to, Puleʻanga Fakatuʻi ʻo Tonga), is a Polynesian country and archipelago. The country has 171 islands – of which 45 are inhabited. Its total surface area is about , scattered over in ...

since November 2015. Cases of Zika virus infection have subsequently been confirmed in American Samoa, Samoa, Tonga, and the

Marshall Islands The Marshall Islands ( mh, Ṃajeḷ), officially the Republic of the Marshall Islands ( mh, Aolepān Aorōkin Ṃajeḷ),'' () is an independent island country and microstate near the Equator in the Pacific Ocean, slightly west of the Inte ...

References

External links

Eurosurveillance case report of a French Polynesian woman with a Zika virus infection and Guillain–Barré syndrome
{{DEFAULTSORT:Zika virus outbreaks in Oceania Zika virus 2013 disease outbreaks 2014 disease outbreaks 2013 in French Polynesia 2014 in French Polynesia 2013 in New Caledonia 2014 in New Caledonia 2013 in the Cook Islands 2014 in the Cook Islands Health disasters in Oceania Disasters in the Cook Islands Disasters in French Polynesia Disease outbreaks in New Caledonia 2013 in Oceania 2014 in Oceania