Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...

What started out as a breakout in one country has turned into a pandemic that has taken the lives of well over 11,000 people across the globe. In its early stages, COVID-19 was often compared to the ...

To stop the spread of an infectious disease like measles, you don’t have to vaccinate everyone. But you do have to vaccinate many. Just how many? To let you discover for yourself, we simulated an ...

Editor’s note: Dr. Jerome Adams, who served as US surgeon general in the first Trump administration, is a distinguished professor in pharmacy practice and public health at Purdue University. The ...

If we measure the strength of public health by its ability to protect those who cannot yet protect themselves, the maternal–newborn dyad is where that test begins. The measles outbreak in rural North ...

After nearly three years of keeping COVID under control, China is experiencing a massive new wave of COVID infections. The official figures reporting 60,000 deaths between December 8 and January 12 ...