illustration of blue coronavirus particles with snowflakes in the background
Is COVID-19 Seasonal?
While the weather isn’t currently the dominant factor driving SARS-CoV-2 transmission, experts say that in the future COVID-19 may become a disease of winter.
ABOVE: © ISTOCK.COM, AHMET AGLAMAZ
Is COVID-19 Seasonal?
Is COVID-19 Seasonal?

While the weather isn’t currently the dominant factor driving SARS-CoV-2 transmission, experts say that in the future COVID-19 may become a disease of winter.

While the weather isn’t currently the dominant factor driving SARS-CoV-2 transmission, experts say that in the future COVID-19 may become a disease of winter.

ABOVE: © ISTOCK.COM, AHMET AGLAMAZ
herd immunity
Vast Majority in US Remain Susceptible to COVID-19: Study
Max Kozlov | Sep 28, 2020
Fewer than 1 in 10 dialysis patients sampled had antibodies against the novel coronavirus as of July, indicating that the greater population is far from levels required to achieve herd immunity.
Measles Epidemic Rocks Madagascar
Jef Akst | Feb 7, 2019
The outbreak has infected 50,000 people and killed 300, most of them children, since cases began to crop up in October 2018.
Who Is Immune to Zika?
Amanda B. Keener | Oct 11, 2016
Researchers tap into ongoing dengue studies to improve antibody-based diagnostic tests for Zika and address unanswered questions about the emerging virus’s epidemiology.
Opinion: The Risk of Forgoing Vaccines
Juliette K. Tinker | Apr 3, 2012
Herd immunity, or the protection of individuals who are not vaccinated due to generally high vaccination rates within a population, does not currently exist in many pockets of the US.