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.
Since 2021, four African nations have reported their first Marburg virus outbreaks.
The patients are from two villages in the northwestern part of the country.
The Sabin Vaccine Institute has been awarded a multiyear contract to advance the development and production of vaccine candidates.