Delta cases show 300 times higher viral load - S.Korea study

SEOUL: People infected with the more transmissible Delta variant have a viral load 300 times higher than those with the original version of the COVID-19 virus, when symptoms are first observed, a South Korea study found.

But the amount gradually decreased over time - to 30 times in four days and over 10 times in nine days - and it matched levels seen in other variants after 10 days, the Korea Disease Control and Prevention Agency (KDCA) said on Tuesday. The higher load means the virus spreads far more easily from person to person, increasing infections and hospitalisations, a health ministry official Lee Sang-won told a news conference.