In several countries, including the US, the number of people who say they'll get a COVID-19 vaccine is falling short of the number needed for herd immunity.

You've been vaccinated; can you now safely see your friends and family? New research hints that vaccinated people may be less likely to transmit the coronavirus, but they are not 100% in the clear.

New data from Addenbrooke's Hospital in Cambridge suggests that a single dose of the Pfizer BioNTech vaccine can reduce by four-fold the number of asymptomatic

Can the current crop of vaccines get us to herd immunity even if variants become widespread? A Harvard immunologist says yes.

The Johnson & Johnson vaccine is different from the Moderna and Pfizer vaccines in a few important ways that could make it a huge help to global vaccination efforts.

Though COVID-19 has killed almost twice as many Black Americans as whites, Black people are the least likely racial group to say they're eager to receive the vaccine as soon as it's available to them.

Websites that crash. Appointments that fill up within seconds. Scheduling your COVID-19 vaccine shouldn't be this hard. A few states have found a better way.

Improved public health messaging to Black, Latinx, and other communities disproportionately impacted by the pandemic can increase Covid-19 knowledge and information-seeking.