Microbial diversity in the infant gut shrank suddenly during the first lockdown, but the lasting health effects are less clear.

The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.

Four class 1 molecules are constructed around a fragment of protein from a virus to make a tetramer Which of the following comments are immunologists making about the tetramer assay these days? A) "It's changed our life." B) "It's just an assay." If you answered "both," you're up on your immunology. The tetramer is just an assay, but it's been making immunologists giddy in the last few years. Peter Doherty of St. Jude Children's Research Hospital made the first statement (wh

The FDA and CDC are investigating a handful of reports of blood clots that occurred several days after people received the one-and-done shot.

Chairman: Arnold Levine, chairman, department of molecular biology, Princeton University Barry Bloom, Weinstock Professor and Howard Hughes Medical Institute (HHMI) investigator, department of microbiology and immunology, Albert Einstein College of Medicine, New York Rebecca Buckley, professor of pediatrics and immunology, Duke University Medical Center Charles Carpenter, chairman, Office of AIDS Research Advisory Committee; professor of medicine,Brown University School of Medicine Don

So far, there are three patients known to have been infected with SARS-CoV-2 twice, and in at least one case the second time around was asymptomatic.

Teams at each of New York City's leading universities are making important research advances.

In a year of racial tumult, Black scientists are uniting for visibility and action. 

SIMON SILVER Department of Microbiology & Immunology University of Illinois Chicago New York, San Francisco, and Los Angeles accounted for nearly half the new AIDS cases in early 1985. But the number of new cases in these cities has leveled off, and new cases here now represent 75 percent of the total. New AIDS cases among homosexuals are increasing slowly, but AIDS among intravenous drug users and AIDS associated with perinatal infection are increasing more rapidly. J.M. Karon, T.J. Donde

Dozens of schools across 11 states have announced emergency policies to help curb the spread of COVID-19.