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  • Pfizer CEO: New data about effectiveness of booster against omicron is ‘very good news’

    05:12
  • Pfizer releases new data about effectiveness of its booster against omicron

    01:53
  • As omicron spreads across US, officials balance new safety protocols

    02:20
  • Prince William talks about mental health and his life for Apple Fitness

    01:38
  • Omicron variant now reported in at least 16 states

    02:39
  • Biden announces plans to combat omicron variant

    01:34
  • Omicron cases turn up in more states as international travel restrictions begin

    02:10
  • Amid omicron, should holiday gatherings and return-to-office plans change?

    04:11
  • Honolulu cuts water supply for nearly 100,000 residents amid health concerns

    00:34
  • Omicron variant has spread to at least 11 states

    02:07
  • How to manage holiday stress and combat ‘emotional vampires’

    04:53
  • Vaccine boosters, travel, holiday parties: Your omicron questions answered

    04:56
  • More children being diagnosed with autism at younger ages, study shows

    00:26
  • New omicron cases detected nationwide as Biden announces winter safety measures

    02:53
  • Generous act bonds 2 friends for life

    04:44
  • ‘Testing works better than travel bans,’ doctor says about omicron

    02:59
  • Dr. Oz says he will run for Senate

    02:37
  • What we know and don’t know about the omicron variant

    02:19
  • It’s ‘highly unlikely’ vaccines will be totally ineffective against omicron, doctor says

    05:17
  • American businesses brace for potential impact of omicron variant

    02:01

People who have had breakthrough COVID-19 share their experiences

04:20

We are hearing more lately about breakthrough cases of COVID-19, but who is getting sick, and what are their symptoms? NBC investigative and consumer correspondent Vicky Nguyen talked to people who have had breakthrough infections about their experiences.