Health authorities said the rate of a rare but serious blood-clotting disorder associated with the Johnson & Johnson shot is higher than previously detected.

The variant will spread quickly through the United States, experts say. What happens after that is less certain.

Multitud de análisis preliminares dibujan una nueva versión del coronavirus extremadamente transmisible incluso entre los vacunados, pero controlable con dosis de refuerzo y otras medidas

The new social distancing rules will run from Saturday until Jan 2 as the threat looms of an even higher surge fuelled by Omicron.

Throughout the pandemic, scientists have hoped for a transmissible, trivial variant. Green shoots of hope suggest suggest it could be here

Hace más de dos décadas, el telescopio espacial ‘Hubble’ nos comenzó a mostrar el destino de las estrellas, las galaxias y, por extensión, del universo. No es nada halagüeño, nuestro universo se diluye sin remedio

La capacità della variante Omicron di reinfettare le persone che hanno già avuto il Covid sembra sia tre volte superiore a quella delle versioni precedenti

DÉCRYPTAGE - Le gouvernement pourrait donner son feu vert d’ici à la fin de l’année. Mais le sujet divise les experts.

The treatment, called Paxlovid, is likely to work against Omicron and could be available in the United States before the end of the year.

Surprising discovery shows scale of plastic pollution and reveals enzymes that could boost recycling