The outbreak in health workers came after ongoing hospitalizations in the region over the past few months.
Some arenaviruses cause hemorrhagic fevers, including Lassa virus--a priority pathogen for vaccine development.
Pakistan has its second wild poliovirus type 1 case of the year, 4 countries report rising mpox, and the WHO has new resources.
Emergent has received a 10-year BARDA contract worth up to $704 million for advanced development and supply of a monoclonal antibody.
Cases were reported over a wide area of the country, including many from the province that includes Bata, the country's largest city.
RSV activity began in the southeast and worked its way north and west. In its Marburg notice, the CDC said there is no evidence so far that the two outbreaks are connected.
Officials also reported another death in a confirmed patient, raising the total to 10.
Along with the four new cases, two more deaths were reported in the outbreak that spans a more than 100-mile area, including two cities.
Though no new cases reported in the two outbreaks, groups released new details about the Marburg virus spread in each country.
Eight more cases have been confirmed, with worries of undetected spread and infections now spanning three provinces that share borders with Cameroon and Gabon.