News & Perspective

The cost study looked at different attack-rate ranges, putting the upper-end estimate at as much as $2 billion.

Tocantins joins Para, Rio de Janeiro, Sao Paulo, Espirito Santo, and Minas Gerais as states with confirmed human yellow fever cases.

The effort to cut NTD levels has been hailed as one of the most effective global partnerships in modern public health.

Both Espirito Santo and Rio de Janeiro states are seeing more cases and are conducting a massive vaccination campaign.

Ecuador reports its first yellow fever case since 2012, and, based on the latest Brazil developments, the WHO updates its travel recommendations.

Surprisingly, tests on placental cells that correspond to the earliest pregnancy stages found more damage from the African Zika strain than the Asian one.

In some hard-hit areas, sampling of poultry environments in December showed increased virus levels compared with that time in past waves.

"Fighting Zika is the most complex epidemic response CDC has taken on," Frieden says.

Florida said the Little River neighborhood is no longer an active site of Zika transmission.

The WHO announces a vaccine campaign in Haiti and $1 million in funding for Yemen.