Joyce Kaufman

How Many Boosters Will We Need?

Virus Outbreak California Vaccine
A health worker loads syringes with the vaccine on the first day of the Johnson and Johnson vaccine being made available to residents at the Baldwin Hills Crenshaw Plaza in Los Angeles Thursday, March 11, 2021. The California Department of Public Health (CDPH) is highlighting the new the one-dose Janssen COVID-19 vaccine by Johnson & Johnson. (AP Photo/Damian Dovarganes)

Researchers from Israel weigh in on the Covid vaccine.