Coronavirus

This Sept. 2020 photo provided by Johnson & Johnson shows a clinician preparing to administer investigational Janssen COVID-19 vaccine. Johnson & Johnson's long-awaited COVID-19 vaccine appears to protect against symptomatic illness with just one shot – not as strong as some two-shot rivals but still potentially helpful for a world in dire need of more doses. Johnson & Johnson said Friday, Jan. 29, 2021 that in the U.S. and seven other countries, the first single-shot vaccine appears 66 percent effective overall at preventing moderate to severe COVID-19. It was more protective against severe symptoms, 85 percent. (Johnson & Johnson via AP)

IHS, tribes ‘pause’ J&J vaccine

The Johnson & Johnson shot makes up approximately 1.5 percent of the shots in the arm, IHS said

FILE - In this March 3, 2021, file photo, pharmacist Madeline Acquilano draws a syringe of Johnson & Johnson COVID-19 at Hartford Hospital in Hartford, Conn. Despite the clamor to speed up the U.S. vaccination drive against COVID-19 and get the country back to normal, the first three months of the rollout suggest faster is not necessarily better. (AP Photo/Jessica Hill, File)

US recommends 'pause' for J&J vaccine over clot reports

Federally run mass vaccination sites will pause the use of the J&J shot, and states and other providers are expected to follow

FILE - In this Sunday, March 21, 2021 file photo a medical worker wearing protective gear sets up boards with the names of the vaccines at a vaccination center in Belgrade, Serbia. Results from a U.S. trial of AstraZeneca's COVID-19 vaccine may have used "outdated information," U.S. federal health officials said early Tuesday March 23, 2021. (AP Photo/Darko Vojinovic, File)

Official: EU agency to confirm AstraZeneca blood clot link

'It is becoming more and more difficult to affirm that there isn't a cause-and-effect relationship between AstraZeneca vaccines and the very rare cases of blood clots associated with a low level of platelets'

Nurse Kathe Olmstead prepares a shot as the world's biggest study of a possible COVID-19 vaccine, developed by the National Institutes of Health and Moderna Inc., gets underway Monday, July 27, 2020, in Binghamton, N.Y. (AP Photo/Hans Pennink)

Study: Moderna vaccine lasts at least 6 months

Pfizer and Moderna have said they are working to update their vaccines, or possibly design a booster shot, in case they're needed against variants

Pictured: Jason Stanfill, 44, traveled from Broken Arrow to receive his COVID-19 vaccine at the Cherokee Nation Outpatient Health Center in Tahlequah on March 18. The Cherokee Nation is making it even easier for the public to access the COVID-19 vaccine at tribal health centers throughout the 14-county reservation by broadening vaccine distribution to all those in and outside the reservation.

UK to ease lockdown next week, will test vaccine passports

Prime Minister Boris Johnson confirmed that the government will test out a contentious "vaccine passport" system as a tool to help travel and large events return safely.

Cremated remains lie in the incineration chamber at the Paradise Memorial Crematory in Scottsdale, one of the state’s largest. Partly fueled by the pandemic, the U.S. cremation rate reached 56 percent in 2020; it was 67 percent in Arizona. (Photo by Kevin Pirehpour/Cronkite News)

Hoping for relief from crematorium smoke

The cremations continue through the night in a scene that has unfolded across America as COVID-19 deaths have risen

Sam Schimmel and Elizabeth Herendeen at Operation Fish Drop. (Photo courtesy of Meghan Sullivan)

‘Operation Fish Drop’

Alaskans came together to address COVID-19 food insecurity

FILE - In this Sunday, March 21, 2021 file photo a medical worker wearing protective gear sets up boards with the names of the vaccines at a vaccination center in Belgrade, Serbia. Results from a U.S. trial of AstraZeneca's COVID-19 vaccine may have used "outdated information," U.S. federal health officials said early Tuesday March 23, 2021. (AP Photo/Darko Vojinovic, File)

AstraZeneca confirms strong vaccine protection after US rift

The drugmaker said it had analyzed more data from that study and concluded the vaccine is 76 percent effective in preventing symptomatic COVID-19

FILE - In this Sunday, March 21, 2021 file photo a medical worker wearing protective gear sets up boards with the names of the vaccines at a vaccination center in Belgrade, Serbia. Results from a U.S. trial of AstraZeneca's COVID-19 vaccine may have used "outdated information," U.S. federal health officials said early Tuesday March 23, 2021. (AP Photo/Darko Vojinovic, File)

Reputation of AstraZeneca's COVID vaccine marred by missteps

The back-and-forth over the latest release is not the first time the company has run into problems

U.S. Public Health Service Lt. Cmdr. Erica Harker, IHS Navajo Area pharmacy consultant and a member of the Zuni Tribe, and Gallup Indian Medical Center Chief of Pharmacy Vicky Chavez prepare COVID-19 vaccines to be redistributed from GIMC to other health care facilities on the Navajo Nation, December 14, 2020. (Photo courtesy of the Indian Health Service)

COVID-19 vaccines explained

An overview of the three vaccines that have been approved in the United States

Boat, waterfront home, private dock, water mountains, sky, Halibut Cove, Alaska

Alaska opens vaccines to all 16 or older

CDC's COVID-19 Vaccine Tracker shows Alaska leading states in the percentage of its population to have received two doses of a vaccine

In this Tuesday, Dec. 29, 2020, photo provided by Johns Hopkins Center for American Indian Health, registered nurse Starla Garcia prepares a coronavirus vaccine in Chinle, Ariz., for someone who enrolled in the COVID-19 vaccine trials on the Navajo Nation and initially received a placebo. (Nina Mayer Ritchie/Johns Hopkins Center for American Indian Health via AP)

Fully vaccinated people can gather without masks, CDC says

The CDC also advised vaccinated people to get tested if they develop symptoms that could be related to COVID-19

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Americans vaccinated against COVID-19 still wait for advice

Such guidance would address a flood of questions coming in from people who have been fully vaccinated against COVID-19: Do I still have to wear a mask? Can I go to a bar now? Can I finally see my grandchildren?

A nurse administers the Pfizer-BioNTech COVID-19 vaccine at Guy's Hospital in London, Tuesday, Dec. 8, 2020. U.K. health authorities rolled out the first doses of a widely tested and independently reviewed COVID-19 vaccine Tuesday, starting a global immunization program that is expected to gain momentum as more serums win approval. (AP Photo/Frank Augstein, Pool)

When will children be able to get COVID-19 vaccines?

The Pfizer vaccine already is cleared for use starting at age 16