SAN DIEGO, CA — The number of pertussis cases, also known as whooping cough, are on the rise in San Diego County.

Nearly half of this year's cases were among people who had never received a dose of whooping cough vaccines, Oregon officials ...

Oregon health officials are alarmed over the state's rising pertussis case count, which is expected to beat the state's ...

The number of pertussis, or whooping cough, cases in Oregon are on track to hit an all-time high by the end of the year, ...

Washington state officials warned of a "sharp increase" in whooping cough cases compared to this time last year, mirroring a ...

Doctors with the SFDPH say last year there was only one whooping cough case reported to them and this year there have already ...

Cases of whooping cough have emerged at Loveland Elementary, Oak Hills High, and UC. Data shows that the illness is returning ...

Public health officials Friday reported a marked increase in the number of pertussis — or whooping cough — cases this year ...

The Oregon Health Authority said that as of Wednesday, the state has seen a total of 827 cases in 23 counties this year. At ...

HUNTINGTON, W.Va. (WSAZ) - Whooping cough cases are on the rise, according to the Centers for Disease Control and Prevention, ...

Symptoms of whooping cough typically start five to 10 days after exposure but can take up to 21 days to develop. After a slight fever and cough, the cough gets worse and symptoms ...