We’re expecting more measles cases as a result of the previous exposures as well as these new outbreak cases,” Snohomish County Health Officer Dr. James Lewis said.

Foragers are being warned of what could be the largest toxic mushroom outbreak in California history, which state health officials say has caused three deaths and sickened more than 30 people who ingested the poisonous fungi.

South Carolina continues to experience a worsening outbreak of measles, three months since it started in the Upstate. The South Carolina Department of Public Health reported on Friday an additional 124 cases of measles in the Upstate, which brings the total number of cases to 558.

Snohomish County’s health officer said he "firmly believes" there are other measles infections in the state that public health teams have not yet found.

Health experts working in and near measles outbreaks told ABC News that vaccine acceptance has been mixed among these communities, with some people begging to get their kids vaccinated early, while others still refuse an immunization.

A norovirus outbreak closed a West Hartford elementary school Friday, and January typically is the peak month of norovirus outbreaks. Here's what you need to know about norovirus in Connecticut, including what norovirus is, what the symptoms are and how to prevent its spread.

Hippie college town Berkeley is sounding the alarm over a frightening outbreak of leptospirosis near a homeless encampment in the leafy Bay Area enclave.