Vitamin D deficiency still contributes to COVID-19 severity in the post-Omicron era, though risks are reduced compared to ...

A painful sore throat is a signature symptom of an Omicron subvariant called NB.1.8.1, or Nimbus. It now makes up about a ...

Investigators concluded that individuals with comorbidities experienced higher risks of severe COVID-19 outcomes during the ...

A new COVID-19 variant is spreading across the United States, but experts warn that this variant has a new painful symptom.

It's related to the omicron variant and is spreading in the U.S. now, causing more than 40% of Covid-19 cases.

Nimbus is another Omicron subvariant that is known for causing typical COVID symptoms, including an extremely sore throat.

In patients with COVID-19, preexisting immunity and Omicron infection were associated with reduced disease severity and upper respiratory symptom presentation.

A new COVID variant is spreading quickly in the U.S. and bringing with it a painful new symptom.

The National Institute of Virology is isolating four new Omicron sub-variants linked to rising Covid cases in India. Genome sequencing indicates JN.1.16 and XFG variants are responsible. While ...

Subvariants—XFG, XFG.3. JN.1—have been confirmed in swab samples of infected persons through whole-genome sequencing.

The health ministry has urged caution as NB.1.8.1 and LF.7 variants circulate, but scientists say disease severity remains ...

Virus isolation of the newer variants was in process at the institute, which would help assess vaccine effectiveness and support India’s indigenous efforts for vaccine development.