The Guam Department of Public Health and Social Services confirmed two new laboratory cases of pertussis, bringing the island’s total for 2026 to six, according to a March 18 release.
An epidemiologic investigation found the two latest cases were linked through direct contact with each other. Health officials said they continue to monitor respiratory illness trends across Guam.
Pertussis, also known as whooping cough, is a highly contagious, vaccine-preventable respiratory disease caused by bacteria. It can trigger severe coughing fits lasting up to 10 weeks or more, often followed by a high-pitched “whoop” when inhaling. Vomiting and exhaustion may also occur.
Health officials warned the illness can lead to serious complications, particularly in infants, including pneumonia, dehydration, seizures and brain damage. Some infants may experience apnea, or life-threatening pauses in breathing, instead of coughing.
The department is urging residents to ensure vaccinations are up to date. The U.S. Centers for Disease Control and Prevention recommends the DTaP vaccine for children under 7, with doses administered at 2, 4, 6, and 15–18 months, and again at 4–6 years. Older children, adolescents and adults who are not fully vaccinated are advised to receive Tdap doses, including a booster at 11–12 years. Pregnant women are recommended to receive a dose during each pregnancy.
Vaccines funded through the Vaccines for Children program are available for eligible children at the Northern and Southern Region Community Health Centers. Those with private insurance are advised to contact their primary care providers.
Residents experiencing flu- or pertussis-like symptoms are encouraged to seek medical care. Updated surveillance data is available through Guam’s communicable disease dashboard.