The announcement follows a difficult spell for the royal family after both Charles and his daughter-in-law Catherine, revealed that they had cancer
A research team at the University of California, Los Angeles, did an in-depth study of 34 people who had recovered from mild Covid-19 infections. They tested their blood two or three times over three months, Xinhua news agency reported on Tuesday.
The researchers found a rapid drop in antibodies - the immune system proteins that help stop viruses from infecting cells in the body. On average, the antibody levels fell by half every 73 days, according to the study published in The New England Journal of Medicine.
The findings raise concern that humoral immunity against SARS-CoV-2 may not be long lasting in persons with mild illness, who compose the majority of persons with Covid-19, said the study.
Further studies will be needed to define a quantitative protection threshold and rate of decline of antiviral antibodies beyond 90 days, according to the study.
The announcement follows a difficult spell for the royal family after both Charles and his daughter-in-law Catherine, revealed that they had cancer
It reiterated that pilgrims require a Haj visa and it can be obtained through recognised official channels
The 18-year-old was taken to hospital in a serious condition
The brothers, who say they are innocent, are accused of having formed an organised criminal network in early 2021 in Romania, as well as in the US and Britain
The left-handed batter scored 3369 runs in 136 one-day internationals and 2893 in 140 Twenty20 internationals — both Pakistan records
Food supplies were distributed to 80 households
On January 31, a heart was airlifted from Delhi to Chennai, paving the way for Ayesha Rashid's life-saving surgery
The online retailer, which is headquartered in Singapore, has said it has around 108 million monthly active users in the 27-nation EU