Two doses of Covid-19 vaccines are “highly effective” in preventing hospital admission with the Delta variant, Public Health England said on Monday.   Scientists said two jabs of the Pfizer/BioNTech vaccine stopped the need for in-patient treatment in 96 percent of cases.   With a double dose of the Oxford/AstraZeneca shot, the rate was 92 … Continue reading Scientists says 2 doses of vaccines effective in preventing delta variant of Corona