Extract all territories mentioned and categorize them by country.

Use the following text for extraction:

The specific event that brought the virus to Brazil was uncertain until March 2016. Brazilian researchers had suggested that the Zika virus arrived during the 2014 FIFA World Cup tournament.[83] French researchers speculated the virus arrived shortly afterwards, in August 2014, when canoeing teams from French Polynesia, New Caledonia, Easter Island, and the Cook Islands, which had been or were experiencing Zika outbreaks, attended the Va'a World Sprint Championships in Rio de Janeiro.[77][84] However, the outbreak in French Polynesia is known to have peaked and declined precipitously by February 2014, lending doubt to the suggestion the virus arrived later that year in Brazil with spectators and competitors.[87] In March 2016, a study published in Science, which developed a "molecular clock" based on the count of virus mutations in a relatively small sample, suggested Zika virus arrived in the Americas (most likely in Brazil) from French Polynesia between May and December 2013, well before the World Cup and Va'a Championships.[87] In the Science article, Faria and colleagues managed to trace the origins of the virus strain that is circulating in Brazil and found that this strain has little genetic variability when compared to the strain of French Polynesia; after relating the number of travellers arriving in Brazil from French Polynesia with the cases reported and the events happening in that year, the team was able to deduce that the virus arrived in Brazil in 2013 during the Confederation Cup, when Tahiti's team played against other teams in a few Brazilian cities, which attracted many tourists from both places.[88] Zika virus usually has very mild, or no symptoms, so it took almost a year for Brazil to confirm the first case of the disease. By then the outbreak was already widespread. Factors associated with the rapid spread of Zika virus in Brazil include the non-immune population, high population density, tropical climate and inadequate control of Aedes mosquitoes in the country.[89] The Zika virus epidemic also revealed structural problems of the health system, in particular in public health services and basic sanitation in Brazil.[90]
France: French Polynesia, New Caledonia, 
Chile: Easter Island
New Zealand: Cook Islands