Stomach Flu 2024 California. California and texas are among the top states in the country with the highest number of outbreaks. The midwest follows at 10% and the south is at 9.5%.
Cases of the highly contagious stomach bug, which causes diarrhea and vomiting, are climbing steadily across the country. Diarrhea, cramps and vomiting usually start within 12 to 48 hours of exposure to the virus, says the mayo clinic.