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Editor’s note: This story has been updated with the latest number of whooping cough cases.
Cases of whooping cough, also known as pertussis, are rising in San Mateo County, according to a Wednesday, Nov. 27, county health advisory. Some 105 cases have been reported in 2024, as of Dec. 3, compared to four in 2023.
In Santa Clara County, 59 cases have been reported this year, as of Dec. 3, up from eight in 2023.
San Mateo County Health said the majority of cases have been reported in individuals 15 to 24 years old. No hospitalizations have been reported.
“Clusters of cases have been reported with increasing frequency in elementary and high school settings,” according to the county report.
According to the California Department of Public Health, 1,744 cases of whooping cough have been reported in the state this year.
Symptoms of whooping cough can resemble that of a common cold with early symptoms of runny nose, congestion, low-grade fever and mild cough. Severe symptoms include difficulty breathing, coughing fits and a “whoop” sound when inhaling after a cough, according to the Centers for Disease Control and Prevention.
Infants who are too young to be vaccinated are most at risk for severe disease.
The Tdap vaccine for whooping cough is available to protect against the contagious disease however immunity after a vaccination decreases after a few years. This vaccine also protects against tetanus and diphtheria.
County health officials advise every pregnant woman to receive a Tdap vaccine at the earliest opportunity, starting at 27 weeks of pregnancy to protect their babies. Family members and individuals who are involved with infant care should also be up-to-date on whooping cough vaccinations.
Pharmacies across the country offer Tdap vaccines including Costco, CVS, Lucky, Rite Aid, Target and Walgreens. Prices and availability vary at each location, but insurance carriers often cover the cost of the vaccine.
“Individuals with whooping cough are considered contagious for 21 days after the onset of cough or until 5 days of antibiotic treatment have been completed,” according to the county health report.
To report a confirmed or suspected case of whooping cough, call 650-573-2345. For more resources on whooping cough visit smchealth.org/whoppingcough.
