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18 Sep 2024 | 12:40 PM UTC

New Caledonia: Elevated pertussis activity in multiple areas in September

Elevated pertussis activity in multiple areas in New Caledonia in September. Obtain vaccination.

Informational

Health officials have reported elevated pertussis activity in multiple areas in New Caledonia, with 36 confirmed cases reported April. 1-Sept. 17. This last pertussis outbreak in New Caledonia occurred in 2018, when 14 cases were reported. Areas reporting most cases include the Southern Province (52.4 percent) and the Loyalty Islands Province (33.3 percent). Local health officials recommend vaccination against pertussis for anyone working closely with infants under six months, early childhood professionals, and those who babysit regularly. This report represents the most complete data available as of Sept. 18.

Visit a doctor to ensure vaccination against pertussis or immunity through previous infection. Practice basic health precautions. Call your medical provider if symptoms develop within three weeks of being in affected areas.

Diphtheria, pertussis, and tetanus (DPT) vaccination coverage in New Caledonia was estimated at 99 percent in 2022, above the 92-94 percent required to prevent wider community transmission. Health officials reported no locally acquired pertussis cases in the country from 2019-2023, 14 cases in 2018, and 26 cases in 2017.

Pertussis, also known as "whooping cough,” is a contagious respiratory illness caused by a type of bacteria called Bordetella pertussis. The bacteria spreads through respiratory droplets created when an infected individual coughs, sneezes, or speaks. Symptoms typically appear 5-10 days after exposure but can develop up to 21 days after exposure. Symptoms range from mild illness with low-grade fever and occasional coughing in the early stage to vomiting, exhaustion, and severe fits of rapid coughing in the later stage. Infants and children up to 4 years old are at highest risk and typically suffer the most severe symptoms.