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No one’s safe from aggressive new variants until the whole world is

Vaccination rates are incredibly low in much of the world, as this interactive map by the shows. Darker regions have high vaccination rates; lighter regions have low vaccination rates.

By now, you may have heard the alarming news out of South Africa: Scientists there have tracked a new variant of Covid-19, and it has way more mutations than Delta.

Countries are halting flights from South Africa; the variant has also been found in Botswana, Belgium, Hong Kong and Israel…

The surge caused by the delta variant wasn’t only due to unvaccinated younger adults, but they played a substantial role

Photo: Mufid Majnun/Unsplash

When the delta variant reached the U.S. and caused another huge surge of infections, a key question arose: Is delta more virulent — does it cause more severe disease — than previous variants? Today, about six months after delta infections first appeared in the U.S., the evidence still doesn’t point…

Photo: Gabriella Clare Marino / Unsplash

Covid has changed the world as we know it, and virulent variants such as Delta have upended early hopes of a clearer-cut “back to normal.” Unfortunately, achieving herd immunity may now be an impossible dream, but we can limit death and disruption as we get to a new normal.


Header image by John Cameron on Unsplash

Too many of us portrayed vaccines as a panacea against COVID-19 and treat them like a sacred cow against criticism

In one of the many interactions I’ve had on social media about vaccines in general and the COVID-19 vaccines in particular, an individual who shall go unnamed asked if a person who was vaccinated against COVID-19 was still capable of catching and transmitting the virus. “Yes,” I replied. …

A long look at our war on viruses

Photo: Stefan Pasch/Unsplash

The very first “vaccine” was given to an eight-year-old boy, James Phipps, who had somehow managed to avoid getting smallpox as it ran rampant through English cities and the countryside. Edward Jenner, the doctor, lived in a large estate next door and had convinced the Phippses to let him try…


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