Richard Knox

A small study offers a bit of cautious optimism about the prospects for treatment of tuberculosis, one of humankind's most ancient scourges.

This week's New England Journal of Medicine has a report showing that adding a 12-year-old antibiotic called linezolid, brand name Zyvox, to existing treatments cured nearly 90 percent of patients with a form of tuberculosis resistant to both first- and second-line antibiotics.

The government has named 75 medical facilities that received a potentially contaminated drug suspected of infecting 47 patients with meningitis nationwide.

It now appears that the new coronavirus found on the Arabian Peninsula is more widespread than initially thought, even though only two people are known to have gotten sick from it.

At first it seemed likely that the two known cases of illness from the new cousin-of-SARS virus may have been exposed in or near the Saudi Arabian city of Jeddah on the Red Sea coast.

Scientists have recently discovered three new human viruses.

Should you take Vitamin D supplements to prevent colds and shorten the misery?

Like other theories about the benefits of vitamin D, it seems like a reasonably good idea. After all, some lab studies suggest vitamin D might enhance immunity. And as everybody knows, people are more prone to respiratory infections during winter, when they cover up and get less vitamin D-generating sunlight.