The World Health Organization (WHO) has declared the outbreaks of microcephaly in Latin America and their possible link to the Zika virus a global health emergency—invoking a rarely used dictum due to the high risk to pregnant women and newborns.
Speaking after an emergency session in Geneva on Monday, WHO director general Margaret Chan announced that a committee of 18 experts agreed that connection between the Zika virus and congenital abnormalities such as microcephaly constitutes an “extraordinary event,” adding that a casual relationship between the two is “strongly suspected though not scientifically proven.”
David Heymann, chair of the Emergency Committee, specified that Zika alone is not a Public Health Emergency of International Concern because it is not a clinically serious condition. However, the group has called for a coordinated international effort to study the relationship between Zika and the recent spike in neurological complications in newborns, including standardized surveillance of cases and “intensified” research into new clusters.
The Committee also demanded a coordinated global response to minimize the threat in affected countries and reduce further international spread.
The announcement followed comments made by Brazil’s health minister that the epidemic in his country is far worse than original estimates because “80 percent of the cases the infected people have no symptoms,” Reuters reports. Marcelo Castro asserted that the mosquito-borne virus is the cause of 3,700 confirmed and suspected cases of newborns with neurological defects in his country.
On Monday, Chan stopped short of issuing blanket restrictions on trade or travel, but noted that high-risk individuals, such as pregnant women, may want to delay traveling to Zika-affected areas and should take extra precautions to prevent mosquito bites.
Authorities in a number of Latin American and Caribbean countries have advised women to avoid getting pregnant altogether—a statement which observers note ignores the fact that information regarding and access to contraceptives usually does not reach women in poor or rural areas.
Meanwhile, a growing chorus of experts in recent days have connected the pandemic currently sweeping Latin America to the rapid deforestation and rising temperatures in those locales.