Health authorities around the world are investigating a mysterious increase in severe cases of hepatitis – inflammation of the liver – in young children.

Almost a third of people report at least one ongoing symptom between 6 and 12 months after their coronavirus infection, according to a survey of 152,000 people in Denmark.

Getting infected twice with two different Omicron coronavirus subvariants is possible, but rarely happens, a Danish study has found.

Johnson & Johnson during late 2021 quietly shut down the only plant making usable batches of the company’s COVID-19 vaccine, the New York Times reported, citing people familiar with the decision.

The BA.2 subvariant of the Omicron coronavirus variant, which has quickly taken over in Denmark, is more transmissible than the more common BA.1 and more able to infect vaccinated people, a Danish study found.

The prevailing theory about the Omicron variant is that it is going to rip through the population quickly and possibly burn out, marking the downside of the COVID-19 pandemic. But researchers are expressing concern about a subvariant of Omicron dubbed BA.2 that appears to be tearing through Denmark, just as the first Omicron wave subsided.

Comirnaty

The Omicron coronavirus variant is better at circumventing vaccinated peoples’ immunity than the Delta variant, according to a published Danish study, helping explain why Omicron is spreading more rapidly.

Combining AstraZeneca’s Covid-19 vaccine with a second dose from either Pfizer-BioNTech or Moderna’s jab provides “good protection”, Denmark’s State Serum Institute said on Aug. 2.

European countries prepared on April 21 to resume deliveries of Johnson & Johnson’s Covid-19 vaccine and speed up the rollout after Europe’s drug regulator backed the shot.

Multiple countries across Europe and parts of Asia suspended the use of AstraZeneca’s Covid-19 vaccine over fears the medication is leading to the development of blood clots in some patients who have received the medication.