It means you have COVID, said Dr. Megan Berman, an associate professor of internal medicine at The University of Texas Medical Branch. False negatives can occur for a variety of reasons, such as being tested too soon after exposure. The virus may simply not be detectable yet in the body, or the sample may not be sufficient, she said.

Your baby will come when she is good and ready, not because of anything you do at home to jumpstart the delivery process, said Dr. Shannon Clark, a professor of maternal-fetal medicine at the University of Texas Medical Branch in Galveston. Clark debunked seven common myths. “Most of the old wives’ tales about things you can do to start labor won't hurt, but they won't help either,” she said.

In the latest Vaccine Smarts column, Drs. Megan Berman and Richard Rupp share a cautionary tale of a rare, but avoidable, injury caused by a vaccine. “People should make sure that prior to receiving vaccines, the administering health professional is fully informed of their health conditions and medications,” the column stated.

In the latest Medical Discovery News Column, Drs. Norbert Herzog and David Niesel deliver good news. Researchers in Spain and at the Brigham and Women’s Hospital in Boston have shown that the consumption of chocolate in the morning or evening leads to a number of changes in the body that can impact burning fat and reducing glucose levels in postmenopausal women.

China put up barriers to studying the origins of COVID-19, leading to a conflict that means less scientific collaboration and more mistrust among global powers that must work together to head off the next disaster. Dr. James Le Duc, retired director of the Galveston National Laboratory, a top U.S. biocontainment facility, urged the director of the Wuhan lab in an email at the beginning of the pandemic to investigate whether the new virus could have resulted from a lab accident. Now, Le Duc doesn’t communicate with colleagues in China on work matters, he said. “Science is shared,” he said. “When you interfere with those collaborations it hurts everybody and is just very sad.”

Hospitals in Houston could run out of the antibody treatment sotrovimab within the next two weeks. The University of Texas Medical Branch told Fox News on Saturday that its four-hospital network is using sotrovimab with the patients who need it most and are waiting on the next shipment. UTMB chief medical officer Dr. Gulshan Sharma told Fox News that the hospital system had allocation prior to Christmas and that it is looking for the next allocation date early 2022. "Based on our current usage it could last for [the] next 10-14 days," Sharma said.

Dr. Gregory Gray, a professor of Internal Medicine at the University of Texas Medical Branch, said that as at-home testing becomes increasingly popular, clinical- and hospital-gathered data about COVID-19 will become increasingly inaccurate as a measurement of the disease in the overall population. He suggested officials may have to move to conducting cohort studies where infection rates are determined through antibody testing of groups over time.

Faced with increased demand and dwindling supplies, the University of Texas Medical Branch is rationing an antibody treatment shown to be effective against COVID-19, restricting the medicine to the sickest and most at-risk people, including some who are unvaccinated. People eligible for the antibody treatment include those not expected to mount an adequate immune response and some unvaccinated people, including anyone 65 years of age or older, said Dr. Gulshan Sharma, the medical branch’s chief medical officer.

The University of Texas Medical Branch’s four-hospital network will likely run through its remaining 600 doses of sotrovimab in 10 days, said Dr. Gulshan Sharma, the system’s chief medical officer. “We’re just hoping and waiting to see what we get,” he said. “It’s anybody’s guess what would be the allocation.”

UTMB Health, anchored by the John Sealy Hospital in Galveston, had to close beds and assign more patients to each nurse. Elective surgeries that require a bed for recovery are being delayed, said Dr. Gulshan Sharma, vice president and chief medical officer, for UTMB Health. About 400 of UTMB’s employees — including 200 of the system’s 4,000 health care workers — tested positive for coronavirus, more than double the number who tested positive during the delta surge. “There is not a dedicated COVID staff or non-COVID staff. Patients still continue to have heart attacks or stroke complications from their chronic diseases, and they show up to our (emergency rooms),” Sharma said. “But our (emergency room) volume is up by almost 50 percent compared to last week.”