JOHANNESBURG - The omicron variant appears to cause less severe disease than previous versions of the coronavirus, and the Pfizer vaccine seems to offer less defense against infection from it but ...

The most immune-evasive omicron subvariants yet are now causing more than 70% of new infections in the U.S., as millions of Americans prepare to travel and gather with family for the holidays. The ...

As the U.S. and other countries fight Omicron, scientists in South Africa are starting to get a clearer picture. WSJ visited a leading lab studying the coronavirus strain, which appears to partially ...

Dr Angelique Coetzee, chairwoman of the South African Medical Association, told the Commons Science and Technology Committee she agrees with a new study from the South African Medical Research Council ...

Omicron, the variant that has dominated Covid cases since Thanksgiving of 2021, isn’t done with us yet, it seems. The latest subvariant of Omicron sweeping the country, XBB.1.5, is moving fast. It now ...

CINCINNATI (WKRC) - A warning about the newest omicron variants now circulating nationwide. The CDC reports that two of them are now responsible for at least 70% of all new infections. Infectious ...

South African researchers released encouraging data on Tuesday based on real-world COVID-19 infections in the country during the current, fourth wave of coronavirus infections, driven almost entirely ...

Four in 10 infected people may unknowingly spread virus Compared to the earlier Delta variant, Omicron multiplies itself 70 times more quickly in tissues that line airway passages ...

Vaccination was shown to lower risk of developing severe COVID-19 in both variants, with the largest difference in risk observed in patients aged 40 to 59 years. Patients infected with the SARS-CoV-2 ...

The Omicron XBB subvariants now comprise over 50% of the Covid-19 cases in New York State. Will Holiday gatherings such as New Year's celebrations result in yet another Covid-19 surge? (Photo by YUKI ...