Throughout the Covid-19 pandemic, scientists have been saying that if the novel coronavirus, SARS-CoV-2, sticks around long enough, people are likely to catch it more than once. That’s based on what ...

With over 40 million Americans now fully vaccinated against COVID-19, it's no secret that the shots can lead to unpleasant side effects such as fever, headache, body aches and fatigue. But while ...

A new case study, from scientists at the University of Hong Kong, is reporting the first clinically confirmed case of SARS-CoV-2 re-infection. Responding to the news, a variety of infectious disease ...

Receiving at least one dose of a covid-19 vaccine before the first infection is strongly associated with a reduced risk of developing post-covid-19 condition, commonly known as long covid, finds a ...

Researchers at the Francis Crick Institute and AlveoliX have developed the first human lung-on-chip model using stem cells ...

The case in Louisiana — along with recent cases in Washington state and in the Canadian patient with severe illness — involves a type of the virus that has recently been detected in wild birds in the ...

The coronavirus pandemic has spread swiftly to almost every corner of the world, infecting more than 23.57 million people and claiming at least 811,000 lives. Early in the pandemic, there was limited ...

A healthy 33-year-old man in Hong Kong is now the first person in the world confirmed to have been reinfected by the pandemic coronavirus, SARS-CoV-2—which has currently infected more than 23 million ...

Scientists have described the infection of human cells by the intestinal pathogen Salmonella Typhimurium during spaceflight. They show how the microgravity environment of spaceflight changes the ...

Asymptomatic viral infections in the first days and weeks of a baby's life are associated with an increased risk of respiratory infections later in life, research suggests. Asymptomatic viral ...