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Elevated levels of a neurotoxin in northeastern Brazil’s drinking water and a high incidence of microcephaly in the region led scientists to look for a link, and they found one.

Scientists have raised questions about the dataset published in The Lancet last week that triggered the suspension of clinical trials around the world—and about Surgisphere Corporation, the company behind the study.

Independently produced knockout mouse strains fail to find evidence of the bone protein’s endocrine functions, and divide researchers’ opinions.

Administration officials and lawmakers say the move is to shore up national security threats, but university professors argue such cancellations represent targeted discrimination.

After initial setbacks, the country’s recent antibody screen estimates that 5 percent of the population has been exposed to SARS-CoV-2.

These webs of chromatin and proteins, released by immune cells to control microbial infections, could serve as a therapeutic target in coronavirus infections.

A modeling study counters initial interpretations that the cluster began with someone who flew to Seattle in mid-January.

A paper published in The Lancet reported that hospitalized COVID-19 patients taking the drug had a higher risk of death, although some researchers have raised questions about the data.

There is no evidence that any of the coronavirus vaccines in development worsen a coronavirus infection rather than confer immunity to it, but the phenomenon is something scientists are closely monitoring.

Two copies of the APOE4 variant, which confers a higher risk of dementia, doubles the risk of severe symptoms as a result of infection with SARS-CoV-2, according to a study.

A large twin study in Sweden finds genetics has a much larger influence on the odds of an autism diagnosis, and has remained consistent over time.

The viral protein known as ORF3b limits the induction of the type I interferon response, which typically alerts other immune system components to the presence of a virus, in cultured cells.