The delta variant, which was first detected in India in October, is fueling a surge in new COVID-19 cases across the globe due to its higher transmissibility than other variants. Here we take a look ...

A certain mutation in the COVID-19 Delta variant causes infected cells to form disruptive chunks in the lungs and leads to more serious symptoms of the disease, a research team said. If the cells in ...

The coronavirus isolated by the National Institute of Infectious Diseases is seen in this electronic microscope photograph provided by the institute. CHIBA -- While omicron variant coronavirus cases ...

TOKYO -- As of June 21, 37 cases of "Delta Plus" coronavirus variant infections have been confirmed in Japan in tallies from the National Institute of Infectious Diseases, Chief Cabinet Secretary ...

The proportion was estimated at approximately 3% in late May. A highly contagious variant of the novel coronavirus that was initially identified in India now accounts for about 58% of all COVID-19 ...

AY.4.2 is "noted to be expanding in England", according to the UK Health Security Agency, and now makes up 6% of new cases. It's an offshoot of the Delta variant that has been dominant since earlier ...

PHILADELPHIA (WPVI) -- New numbers are shedding light on just how quickly the Delta variant of COVID-19 is spreading in the United States. The more contagious Delta variant now makes up 83% of ...

BANGKOK/TOKYO -- Coronavirus outbreaks across Southeast Asia fueled by the delta variant are squeezing business activities in the region and disrupting global supply chains.