Across the United States, the Centers for Disease Control and Prevention shows more than 25,000 cases of whooping cough have been reported so far this year. Last year, it was a little over 5,000 cases.

California's cases of whooping cough are more than six times as high as last year, and in Los Angeles County, reports of the infectious disease rose by nearly 119%. It reflects a trend seen across the U.

The number of cases of pertussis, more commonly known as whooping cough, in California is over six times more than last year, according to a Sept. 2024 report released by the California Department of Public Health. Whooping cough is a highly contagious ...

Whooping cough — highly contagious and potentially dangerous — has surged in California to levels not seen since the start of the COVID-19 pandemic.

Whooping cough levels are at their highest since pre-pandemic in California, mirroring similar patterns elsewhere, say scientists.

Cases of whooping cough rising in California in 2024