New US CDC guidance says there’s little scientific basis for routinely using disinfectants in community settings and that in most situations, cleaning surfaces using soap or detergent is enough to reduce risk.
The CDC real-world study on nearly 4,000 frontline workers and health care personnel in the US showed 80% effectiveness against Covid-19 after one dose of mRNA vaccine, and 90% protection after two doses.
Brazil surpassed 300,000 deaths from Covid-19 on Wednesday and has seen record daily infections over the last week, with an average of 2,273 fatalities.
The nation of 1.3 billion people was this month overtaken by Brazil as the second-most infected country after cases dipped in December and January from a peak of nearly 100,000 per day in September.