Increase in Global and Domestic Measles Cases and Outbreaks: Ensure Children in the United States and Those Traveling Internationally 6 Months and Older are Current on MMR Vaccination

On March 18, 2024, the U.S. Centers for Disease Control and Prevention (CDC) issued a Health Alert Network (HAN) message to inform clinicians and public health officials of an increase in global and U.S. measles cases and to provide guidance on measles prevention. Clinical laboratories should review the Lab Tools for Measles for information on…

Biosafety Laboratory Guidance for Handling and Processing Mpox Specimens

On April 4, 2024, the U.S. Centers for Disease Control and Prevention (CDC) updated the Biosafety Laboratory Guidance for Handling and Processing Mpox Specimens webpage to include information about clade I and to clarify select agent requirements. CDC also updated the How to Report Results from Orthopoxvirus, Non-Variola Orthopoxvirus, and Mpox Virus Diagnostic Testing webpage…

Highly Pathogenic Avian Influenza A(H5N1) Virus: Identification of Human Infection and Recommendations for Investigations and Response

On April 5, 2024, the U.S. Centers for Disease Control and Prevention (CDC) issued a Health Alert Network (HAN) message about a recently confirmed human infection with highly pathogenic avian influenza (HPAI) A(H5N1) virus in the United States following exposure to presumably infected dairy cattle.