21 heartwarming, feel-good things that happened in 2021

From small acts of kindness to awe-inspiring events, there were a lot of feel-good moments in 2021.

Houston Mayor Sylvester Turner tests positive for COVID-19

Houston Mayor Sylvester Turner tested positive for COVID-19 on Friday and is experiencing mild symptoms, he confirmed in a statement.

Pfizer testing third COVID-19 vaccine dose for kids under 5

Pfizer said its special low-dose COVID-19 vaccine didn’t have as strong an immune response as expected in 2- to 4-year-olds, and it’s now testing three doses.

Pfizer, Moderna vaccines recommended over J&J shot, CDC panel says

U.S. health advisers are recommending that most Americans get the Pfizer or Moderna vaccines instead of the Johnson & Johnson shot.

How to tell the difference between the common cold, flu and COVID-19

Is it COVID-19, the flu or the common cold? Jade Flinn, a nurse educator at Johns Hopkins Hospital’s biocontainment unit, outlines some of the key differences and similarities between the three illnesses.

App helps shoppers find stores with lowest COVID-19 risk

A University of Houston professor just launched an app to help you stay safer from COVID-19 when you're shopping.

US COVID-19 death toll tops 800K amid increasing delta, omicron spread

The milestone is a sad ending to a year that held much promise with the arrival of vaccines, and comes as officials around the world are monitoring the spread of the new omicron variant.

Canines in California trained to sniff out COVID from old socks

Dogs in Concord, Calif. are being trained to sniff COVID from old socks. The goal is to eventually use these COVID-sniffing canines in schools.

Omicron variant is milder but better at evading vaccines, South African data indicates

The omicron variant appears to cause less severe disease than previous strains, South African data suggests. But the Pfizer vaccine seems to offer less defense against infection.

Pfizer: COVID-19 pill remains effective against severe disease, omicron variant

Pfizer said its experimental COVID-19 pill Paxlovid reduced hospitalizations and deaths by 89% among high-risk adults when taken shortly after initial symptoms.

Air Force discharges 27 for refusing COVID-19 vaccine

The Air Force has discharged 27 people for refusing to get the COVID-19 vaccine, making them what officials believe are the first service members to be removed for disobeying the mandate to get the shots.

Man gets vaccinated up to 10 times in a single day

A man allegedly got vaccinated against COVID-19 as many as 10 times in a single day. Here's why:

South African president tests positive for COVID-19, has mild symptoms

South African President Cyril Ramaphosa is self-isolating in Cape Town and is being monitored by the South African Military Health Service.

WHO warns omicron variant fears may set off hoarding of COVID-19 vaccines

The World Health Organization has expressed concerns that rich countries spooked by the emergence of the omicron variant could step up hoarding of COVID-19 vaccines.

UPDATE: Nine cases of omicron variant identified by Houston Methodist, more expected

Houston Methodist has confirmed they have identified nine cases of the omicron variant through its comprehensive virus genome sequencing surveillance project. They expect more will be identified in the next couple of days.

Medicago's plant-based COVID-19 vaccine showing promising trial results, company says

Medicago announced Tuesday that its two-dose vaccine was 71% effective at preventing COVID-19 infection in a large, late-stage study that included several variants including the delta variant.

Pfizer: COVID-19 booster offers protection against omicron in early study

Pfizer said its COVID-19 booster dose may protect against the new omicron variant, but the initial two doses appear significantly less effective.