Pennsylvania's measles outbreak is the country's largest in three decades

Pennsylvania is currently experiencing a measles outbreak that represents the largest occurrence of the virus in the United States in three decades. The outbreak involves the measles virus, which belongs to the Morbillivirus family and the paramyxoviridae group. This significant public health event marks a critical spike in cases, highlighting the current scale of the transmission within the state compared to historical data from the last thirty years across the entire country.