Let's Talk Health - Ep. 7: Flu, COVID-19, and RSV: The Triple Demic?

In this episode of the Pan American Health Organization’s podcast Hablemos de Salud, epidemiologist Marc Rondy speaks about the concept of a “tripledemic”—the simultaneous circulation of influenza, COVID-19, and respiratory syncytial virus (RSV), particularly during the winter season.

Key points discussed

Tripledemic Explained: The term refers to the concurrent spread of three major respiratory viruses—flu, COVID-19, and RSV—which can lead to severe illness and strain healthcare systems, especially during colder months.

Vulnerable Populations: Infants, older adults, pregnant women, and people with chronic conditions are at higher risk of severe outcomes from these viruses.

Vaccination Importance: Annual vaccination is recommended for flu and COVID-19 due to virus mutations. For RSV, strategies include vaccinating pregnant women and administering monoclonal antibodies to newborns.

Post-Pandemic Surge: Reduced virus circulation during the COVID-19 pandemic led to lower community immunity, resulting in stronger outbreaks in recent years.

Vaccine Effectiveness: Despite some breakthrough infections, vaccines remain highly effective at preventing severe disease and hospitalization.

Pandemic Potential: Influenza remains a top candidate for future pandemics due to its ability to mutate and recombine with animal strains, such as avian flu.

Avian Influenza Update: While there have been human cases, particularly in the U.S., there is no evidence of human-to-human transmission. The risk is currently moderate, especially for poultry workers.

Public Health Commitment: Rondy shares his personal journey into public health, emphasizing the importance of equitable access and the meaningful impact of his work in the Americas.