Public Health

The CDC, FDA, the Infant Botulism Treatment and Prevention Program, and public health officials in several states are investigating a multistate outbreak of infant botulism linked to recalled powdered infant formula.

The Pennsylvania Department of Health (DOH) confirmed a Lancaster County resident tested positive for measles and may have exposed others at the Lancaster County Courthouse on June 3 from 10 a.m. to 4:30 p.m. Individuals who are not vaccinated are most at-risk for infection.

The Pennsylvania Department of Health (DOH) issued a health alert that Pennsylvania’s first West Nile virus (WNV)-positive mosquito pools were identified in Allegheny, Beaver, Bucks, Lycoming, Monroe, Northumberland, Pike, Tioga and York Counties indicating WNV is circulating in Pennsylvania.

The 2026 FIFA World Cup is occurring during June and July 2026 at host cities in Mexico, Canada, and the United States, including Philadelphia. The Pennsylvania Department of Health is conducting enhanced disease surveillance during this event because increased travel and crowding may lead to additional reports of infectious disease among residents and visitors.

The Pennsylvania Department of Health (DOH) has issued a health alert on extreme heat forecasted for Pennsylvania Thursday, June 11 and Friday, June 12.

The Pennsylvania Department of Health (DOH) has issued an update on the hantavirus outbreak and reports no notifications of any Pennsylvania residents who were on board the associated cruise ship.

The PA Department of Health issued an alert on the Ministry of Health of the Democratic Republic of Congo's confirmed outbreak of the Ebola disease after laboratory analysis confirmed the cause as Bundibugyo virus disease (BVD).

The Centers for Disease Control and Prevention has issued an update to inform clinicians and health departments about testing available for patients with suspected hantavirus infection to include Andes virus.

In Pennsylvania, Legionella infections increase each year during spring, summer, and fall months.

On May 2, 2026, the World Health Organization was notified of a cluster of severe acute respiratory illness among passengers and crew of a cruise ship in the Atlantic Ocean. The cluster included two deaths and one critically ill passenger whose laboratory tests confirmed hantavirus.

The Pennsylvania Health Department (DOH) has identified three cases of measles in Lebanon County.

The Pennsylvania Department of Health (DOH) identified recent sustained increases in tick bite-related emergency department visits.

The Centers for Disease Control and Prevention (CDC) is issuing this Health Advisory to notify public health professionals, clinicians, laboratorians, and people at risk for overdose about increasing reports from U.S. jurisdictions detecting medetomidine.

On January 30, 2026, the Pennsylvania Health Department (DOH) identified five confirmed cases of measles in Lancaster County. These are the first cases to be identified in Pennsylvania for 2026.

PHILADELPHIA—The Philadelphia Department of Public Health is notifying travelers and others of a possible measles exposure.

The Centers for Disease Control and Prevention (CDC) today adopted individual-based decision-making for hepatitis B immunization for parents deciding whether to give the hepatitis B vaccine, including the birth dose, to infants born to women who test negative for the virus.