LONDON (REUTERS) - British scientists expressed concern on Monday that Covid-19 vaccines being rolled out in Britain may not be able to protect against a new variant of the coronavirus that emerged in South Africa and has spread internationally.
Southeast Asia is the source of 95 percent of global cassava exports, and the detection in 2015 in Cambodia of the potentially harvest-devastating Sri Lankan cassava mosaic virus (SLCMV) raised alarm. By 2016, the disease, which cannot always be detected visually, had spread, showing its potential to become a major threat to the livelihoods of millions of smallholder farming families.
