Mexico's Pertussis Outbreak Awaiting Spring Breakers

As Spring Break vacationers plan their trip to Mexico in March 2025, the local government has issued an alert regarding a vaccine-preventable disease.

In late February, Mexico's Ministry of Health reported a notable increase in whooping cough (pertussis) cases in 2025.

As of March 3, 2025, 120 pertusis cases have been confirmed across 21 Mexican states. led by Nuevo León (24 cases). This increase is very concerning compared to the 15 cases recorded in the same period in 2024.

Mexico isn't alone in reporting a spike in pertusis cases.

The Centers for Disease Control and Prevention (CDC) recently reported that the number of pertussis cases in the United States increased last year.

Preliminary data show that more than six times as many cases were reported as of week 52 on December 28, 2024, compared to the same time in 2023.

As typical infection patterns return to the U.S., the CDC expects pertussis cases to increase in both unvaccinated and vaccinated populations. Pertussis occurs in vaccinated people since disease immunity from vaccination fades over time. 

Furthermore, keeping infants away from unvaccinated people is also advisable to avoid contagion.

The CDC recommends that everyone maintain good hygiene practices to prevent the spread of whooping cough. When coughing, it is essential to cover your mouth.

Therefore, vaccination is the best way to prevent pertussis infection before flying to Mexico to enjoy the warm weather and Spring Break 2025 activities.