Dear Colleague Letters

Dear Colleague letters are brief messages containing clinical guidance and best practices on public health topics and can be responsive to current or emergency events. Letters may include:

• Urgent communication before, after, or during a public health emergency
• Notifications to physicians of emerging health issues
• Clinical guidelines and policies

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Letters, 2026

• New York State and New York City Endorse the 2026 American College of Obstetricians and Gynecologists’ Maternal Immunization Schedule (PDF, August 10)
• Re: Counseling Parents About Vitamin K and Hepatitis B Vaccination for Newborns (PDF, August 7)
• Risk of Severe West Nile Virus Neuroinvasive Disease in People Receiving B-Cell Depleting Medications (PDF, August 5)
• New Medicaid Eligibility Requirements for Provider Awareness (PDF, July 27)
• Streamlining the Asthma Medication Administration Form in the Citywide Immunization Registry (PDF, July 9)
• Current Guidance for Blood Lead Testing and Management for Pediatric and Adult Patients, Including Pregnant People (PDF, June 1)
• End of RSV Monoclonal Antibody Administration Season in NYC (PDF, April 30)
• New Gonorrhea Treatment Options (PDF, April 13)
• Twice-Yearly Injectable Lenacapavir for HIV Pre-Exposure Prophylaxis (PDF, February 23)
• AAP Joint Endorsement of AAP immunization schedule (PDF, January 28)
• Family Separation for Provider Awareness (PDF, January 16)

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