The Lancet Microbe

A study of more than 4,000 patients in southern Taiwan suggests that older adults may play an under-recognised role in tuberculosis transmission. It also reveals how patterns of spread differ across bacterial groups and locations, offering clues for more targeted prevention.

Scientists from Hokkaido University have shown that an antigen-based test for quantifying SARS-CoV-2 in saliva samples is simple, rapid, and more conducive for mass-screening.

Study shows that antibody longevity varies widely from 40 days to as long as several decades and not everyone who has recovered from COVID-19 is immune from reinfection. Individuals with low levels of neutralising antibodies may still be protected if they have robust T-cell immunity. Blood tests and a computer algorithm suggest annual vaccinations might be needed for some individuals to prevent future outbreaks of COVID-19.