Melatonin exacerbates asthma, study finds

Research time capsule holds new discoveries in HIV: Men who contracted HIV back in the 1980s appear to have had a different microbiome than their counterparts who remained HIV-negative, according to a study published Thursday in the journal Microbiome

A longer-lasting COVID vaccine? New study points the way

Vaccines and previous infection could offer some 'stronger than basic' protection to Omicron, early study suggests