Leonardo Picciani expressed hope that by August the number of cases of transmitted Zika virus will drop to zero in Rio
It can be spread by infected mosquitoes or through sexual intercourse
For importation and local transmission around the world
The WHO has however ruled out any change in timing or the location of the upcoming Games in Rio
Subtropical and tropical countries with a history of dengue and other mosquito-borne diseases have the greatest risk of the virus spreading, says analysis
The finding showed that Zika virus could infect Hofbauer cells -- placental macrophages -- in cell culture
Potentially improving current diagnosis methods that can take days or weeks to accurately detect the virus.
There is no vaccine or treatment for the virus, which in most people causes only mild symptoms -- a rash, joint pain or fever
However, the agency on Monday warned it still expected cases around the world to sharply rise in the coming months
Chile was, with Canada, one of just two states in the Americas said to be free of the Aedes aegypti mosquito
Zika was first identified in Brazil in early 2015, and a surge in infants born with microcephaly began nine months later, in September
The mosquito that spreads the virus in now present in about 30 American states, say health officials
The researchers saw 151 cases with neurological manifestations during a period of 2014 to 2015.
A research led by Olli Vapalahti from University of Helsinki, Finland is published in the New England Journal of Medicine
More than a year before the virus was reported in Brazil.
The virus is primarily transmitted to humans by Aedes aegypti mosquitoes.
Summertime weather conditions are favourable for populations of the mosquito along the East Coast as far north as New York City
If confirmed, it would be the first death related to Zika in the Central American country where 15,732 suspected cases have so far been reported
The self-limiting strain of the Aedes aegypti mosquito was developed by Oxitec, the UK-subsidiary of US synthetic biology company Intrexon
The person died from Guillain-Barre syndrome yesterday, a neurological disorder that results from the body's immune system attacking part of the nervous system