LONDON/GENEVA : The World Health Organization-led coalition fighting the coronavirus needs $31.3 billion over the next 12 months to develop and roll out tests, treatments and vaccines, it said on Friday.It said $3.4 billion had been contributed to date, leaving a funding gap of $27.9 billion, of which $13.7 billion was "urgently needed".The WHO initiative aims to scale up delivery of 500 million tests and 245 million courses of treatments to low- and middle-income countries by mid-2021, it said in a statement.It also aims to scale up delivery of 2 billion vaccines doses, including 1 billion to be bought by low- and middle-income countries, by the end of 2021.The WHO is working with a large coalition of drug-development, funding and.