Dr. Laith Alexander

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PHOTO: People line-up to take a Covid-19 test in the Sunset Park, Aug. 13, 2020, in New York City. — Spencer Platt/Getty Images, FILE

5 unanswered medical questions about coronavirus

PHOTO: Nurse Jose Muniz prepares a COVID-19 vaccination at Research Centers of America on Aug. 7, 2020, in Hollywood, Fla. — Joe Raedle/Getty Images

Vaccine nationalism: Experts warn countries against taking 'me-first' approach

PHOTO: One of the first South African vaccine participants gets injected during the clinical trial for a potential vaccine against the COVID-19 at the Baragwanath hospital in Soweto, South Africa, June 24, 2020. — Siphiwe Sibeko/POOL/EPA via Shutterstock

As vaccines move into phase 3 trials, diversity must be at top of agenda

PHOTO: A scientist at RNA medicines company Arcturus Therapeutics researches a vaccine for the novel coronavirus (COVID-19) at a laboratory in San Diego, Calif., March 17, 2020. — Bing Guan/Reuters, FILE

Vaccine companies searching for 1-shot dose of COVID-19 vaccine

PHOTO: In this March 20, 2020, file photo, Ridley Epstein, 9, and her grandmother, Donna Forsman, 78, bid goodbye to one another after chatting via cell phone during a through-the-door visit at Brookdale Arlington Senior Living in Arlington, VA. — Jahi Chikwendiu/The Washington Post via Getty Images, FILE

Are seniors being put at risk if children return to school?

PHOTO: Medical staff check on a patient in the hospital. — Getty Images, FILE

Surprise medical bills are on the rise, study finds

PHOTO: A riverbed is seen in this stock photo. — STOCK PHOTO/Shutterstock

The pathogens lurking in our pools and lakes: What you need to know

Richard Drew/AP, FILE

Textured breast implant recalled due to risk of rare cancer: What you need to know

PHOTO: In this file photo, a female mosquito is beginning to feed. — Bernard Lynch/Getty Images, FILE

Mosquito milestone: Use bacteria and radiation to eliminate the bugs

PHOTO: Vitamins are taken in this stock photo. — Janine Lamontagne/Getty Images

Vitamins, minerals and fad diets? ‘Don’t waste your money': Study author

PHOTO: A pregnant woman prepares a meal. — STOCK PHOTO/Getty Images

FDA extols virtues of fish for pregnant and breastfeeding mothers

PHOTO: The nanochannel delivery system (nDS) is roughly the size of a grape but can deliver drugs over months or even years. — Grattoni Laboratory/Houston Methodist Research Institute

A smart drug implant – controlled from a smartphone – could treat chronic disease

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