Coronavirus deaths in Eastern Europe topped 1 million on December 30, according to a Reuters tally, as the Omicron variant threatened to batter the region.

Pfizer Inc and BioNTech SE’s COVID-19 vaccine caused mostly mild side effects in children aged 5 to 11 years, according to data published by the U.S. Centers for Disease Control and Prevention on December 30.

U.S. health experts on December 30 urged Americans to prepare for severe disruptions in coming weeks as the rising wave of COVID-19 cases led by the Omicron variant threatened hospitals, schools and other sectors impacting their daily lives.

Covid-19 will stifle New Year celebrations around the world for the second year running on December 31, with governments in many countries hurriedly scaling back festivities in an effort to contain rampant contagion.

A key part of the immune system’s second-line defense – its T cells – are highly effective at recognizing and attacking the Omicron variant, thereby preventing most infections from progressing to critical illness, a new study shows. New findings also suggest the odds that vaccinated people will catch the virus if a household member becomes infected are nearly three to four times higher with Omicron than with Delta, but booster doses reduce that risk.

Global COVID-19 infections hit a record high over the past seven-day period, Reuters data showed on December 29, as the Omicron variant raced out of control and governments tried to contain its spread without paralyzing fragile economies.

The average number of daily confirmed coronavirus cases in the United States hit a record high of 258,312 over the past seven days, a Reuters tally showed on December 29, as U.S. officials weigh the impact of the more transmissible Omicron variant.

Part of what is being discovered about the Omicron variant of Covid-19 is how fast it appears to infect people, a median of about three days, compared to four or five with other variants.

Researchers at Emory investigated the use of an FDA-approved ADHD medication on patients with mild Alzheimer’s symptoms and found it appeared to reduce levels of tau.

The Omicron variant was estimated to be 58.6% of the coronavirus variants circulating in the United States as of Dec. 25, according to data from the U.S. Centers for Disease Control and Prevention (CDC) on December 28.