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21 Jun 2024 | 02:34 PM UTC

Norway: Elevated pertussis activity reported nationwide, especially Akershus, in June /update 1

Elevated pertussis activity reported nationwide in Norway in June. Akershus is most affected. Obtain vaccination.

Warning

Health officials have reported elevated pertussis activity nationwide in Norway, with an additional 1,213 cases reported May 10-June 21, bringing the total case count to 2,676 cases since Jan. 1. This is compared to the 323 cases reported over a similar period in 2023. Akershus (556 cases) is the most affected, followed by Oslo (483 cases), Trondelag (339 cases), Vestland (262 cases), Innlandet (212 cases), Rogaland (192 cases), Vestfold (153 cases), and Agder (105 cases). Local health officials urge the public to get their children vaccinated against pertussis and recommend that adults get a refresher dose every 10 years to protect themselves against the disease. This report represents the most complete data available as of June 21.

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 Norway is estimated at 97 percent in 2022, which is above the 92-94 percent required to prevent wider community transmission. Health officials have reported 1,201 pertussis cases nationwide in Norway in 2023, 44 cases in 2022, 39 cases in 2021, and 812 cases in 2020.

Pertussis - also known as "whooping cough" - is a very 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.