Tweaking the genomes of two phages and combining them with a third phage helped to clear a persistent Mycobacterium infection in the patient.

A study of hundreds of gay couples finds that HIV-positive men taking antiretroviral medication don’t pass the virus to their partners, even when having unprotected sex.

Researchers analyze 146 samples from close to 80 sites, with nearly a third of samples coming from the Arctic Ocean.

So far this year, 465 infections have been reported, with numbers approaching their highest since measles returned to the country.

Viruses that infect plants and occasionally insects appear to cause infection with a divide-and-conquer strategy, multiplying separate segments of genetic material in different host cells.

The “London patient” may represent the second person cured of the infection by a cell transplant.

Pathogens can take various routes to pass the blood brain barrier and damage cells.

Scientists may need to seriously reconsider the cast-aside hypothesis that pathogens can play a part in diseases such as Alzheimer’s and Parkinson’s.

The outbreak has infected 50,000 people and killed 300, most of them children, since cases began to crop up in October 2018.