On This Day

BA.2 version of Omicron is now the dominant form of COVID-19 in America according to the Center for Disease Control and

BA.2 version of Omicron is now the dominant form of COVID-19 in America according to the Center for Disease Control and Prevention [1]

The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials, logistics, and manufacturing. It is authorized for use in humans to provide protection against COVID-19, caused by infection with the SARS-CoV-2 virus. The vaccine is given by intramuscular injection. It is composed of nucleoside-modified mRNA (modRNA) that encodes a mutated form of the full-length spike protein of SARS-CoV-2, which is encapsulated in lipid nanoparticles.

Historical Significance

The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech.

Events Before

  1. Cuba's "day zero" unifies its two currencies by withdrawing the Cuban Convertible Peso (CUC), alongside steep increases

    Cuba's "day zero" unifies its two currencies by withdrawing the Cuban Convertible Peso (CUC), alongside steep increases in prices and salaries, effectively devaluing the remaining Cuban Peso for the first time since 1959 [1]

  2. First Oxford-AstraZeneca COVID-19 vaccines are given to the general public, with 82-year-old Brian Pinker in the UK the

    First Oxford-AstraZeneca COVID-19 vaccines are given to the general public, with 82-year-old Brian Pinker in the UK the first to receive the jab [1]

  3. Supporters of U.S. President Donald Trump storm the Capitol in Washington, D.C., during Congress’s certification of Joe

    Supporters of U.S. President Donald Trump storm the Capitol in Washington, D.C., during Congress’s certification of Joe Biden and Kamala Harris’s victory, resulting in five deaths and prompting the evacuation of lawmakers and Vice President Mike Pence

  4. Military coup in Myanmar; civilian leaders are detained, including Aung San Suu Kyi, and a one-year state of emergency i

    Military coup in Myanmar; civilian leaders are detained, including Aung San Suu Kyi, and a one-year state of emergency is declared (still in effect)

  5. Kim Kardashian West files for divorce from her third husband, Kanye West after almost seven years

    Khloé Alexandra Kardashian is an American media personality, socialite, and businesswoman.

Events After

  1. Avenger's actor Jeremy Renner is accidentally run over by a snowplow, breaking more than 30 bones in his body near Reno,

    Avenger's actor Jeremy Renner is accidentally run over by a snowplow, breaking more than 30 bones in his body near Reno, Nevada [1]

  2. Crystal Renay Smith (37) divorces American singer NE-YO (43) after 12 years of marriage

    Crystal Renay Smith (37) divorces American singer NE-YO (43) after 12 years of marriage

  3. At age 45, Tom Brady, regarded as the greatest NFL quarterback of all time, announces his re-retirement after a 23-year

    At age 45, Tom Brady, regarded as the greatest NFL quarterback of all time, announces his re-retirement after a 23-year career and a record 7 Super Bowl titles with the NE Patriots and TB Buccaneers

  4. Powerful earthquakes strike Turkey and Syria, first with a 7.8 magnitude at 4:15 am, 23 kilometers east of Nurdagi, and

    Powerful earthquakes strike Turkey and Syria, first with a 7.8 magnitude at 4:15 am, 23 kilometers east of Nurdagi, and second with a 7.5 magnitude at 1:24 pm, with many strong aftershocks causing buildings to collapse. The death toll is 53,537 in Turkey and 8,000 in Syria [1]

  5. Key figures in Artificial Intelligence including Elon Musk and Steve Wozniak sign an open letter warning the race to dev

    Key figures in Artificial Intelligence including Elon Musk and Steve Wozniak sign an open letter warning the race to develop AI systems is out of control and asking for a suspension of at least six months [1] [2]

More from the 2020s

Frequently Asked Questions

What happened on March 29, 2022?
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials, logistics, and manufacturing. It is authorized for use in humans to provide protection against COVID-19, caused by infection with the SARS-CoV-2 virus.
Why is BA.2 version of Omicron is now the dominant form of COVID-19 in America accor... significant?
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech.

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