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    Two scientists receive Nobel Prize in medicine for work on Covid-19 mRNA vaccine

    01:58
  • Nobel Prize in medicine awarded to 2 scientists whose discoveries enabled the creation of mRNA vaccines against Covid-19

    01:24
  • Long Covid-19 impacts some adults’ blood biomarkers, new study finds

    01:51
  • When should I get the vaccines for flu and COVID?

    04:35
  • How Covid symptoms have evolved since the pandemic

    01:44
  • Florida officials face backlash over new Covid guidance

    04:01
  • Whistleblower claims CIA tried to cover up COVID lab-leak theory

    00:34
  • CDC approves new Covid vaccine for anyone over six months

    02:01
  • FDA approves new round of COVID-19 booster shots

    03:24
  • FDA approves new Covid-19 booster shot as cases are on the rise

    02:09
  • FDA approves new Covid booster shots as cases rise in U.S.

    04:04
  • FDA expected to approve new COVID booster as cases rise in US

    04:31
  • Covid cases and hospitalizations up 16%

    01:57
  • FDA could greenlight new Covid boosters as early as Friday

    03:54
  • COVID numbers on the rise as new variant spreads

    02:27
  • New Covid variant drives up Covid cases around U.S.

    03:26
  • First lady Jill Biden tests positive for COVID; Biden tests negative

    01:54
  • Spread of Covid impacting start of classes for some schools across U.S.

    01:41
  • New findings offer more answers on long Covid

    03:18
  • FDA panel recommends updating Covid booster shots for fall

    01:35
  • China hit with new Covid wave months after easing restrictions

    02:27
  • CDC says tinnitus not linked to Covid vaccines

    01:45
  • Biden terminates Covid national emergency

    03:43
  • Nurse speaks out after being subject of anti-vaccine conspiracy theory

    04:00
  • Long-Covid patients find hope in treatment aiming to restore taste and smell

    02:15
  • Moderna CEO: 'Vaccines are one of the best investments we can make'

    01:17
  • Biden signs bill to declassify Covid origins intelligence

    02:24
  • Major U.S. cities turn offices into apartments due to pandemic

    02:20
  • Raccoon dogs linked to Covid-19 origins, new data suggests

    01:43
  • How Long Covid impacts patients three years since start of pandemic

    05:27
  • China fully reopens borders to foreigners 3 years after Covid pandemic began

    03:50
  • Do some people have ‘super immunity’ to Covid?

    02:40
  • Covid-19 mask guidance eased in Japan, but many will keep wearing them

    00:58
  • U.S. to lift Covid travel testing requirements for travelers from China

    04:12
  • U.S. to lift Covid testing requirements for travelers from China

    03:19
  • China rejects FBI comments that the Covid-19 pandemic originated from a Wuhan laboratory leak

    00:57
  • FBI director points to Wuhan lab leak as 'likely' origin of COVID-19

    05:24
  • FBI believes Covid originated from Chinese lab leak, says agency director

    03:58
  • Savannah Guthrie test positive for COVID-19 during live broadcast

    00:22
  • Hong Kong will ease most requirements for Covid-19 masks, but these residents will still wear them

    01:03

A year of Covid has big impact on mental health

01:35

As the world marks the first anniversary of the COVID-19 pandemic, a new survey finds the year has had a major impact on our mental health. NBC's Sarah Dallof reports.