WHO Experts Say That There May Never Be A Coronavirus Vaccine

While over one hundred vaccines are currently under preclinical trials and a couple of these have entered the human trial stage, leading health professionals have started to question the very possibility of producing a vaccine.

"There are some viruses that we nevertheless do not have vaccines against. We can't make an absolute assumption that a vaccine will appear at all, or if it does appear, whether or not it will skip all of the tests of efficacy and safety," said Dr David Nabarro, World Health Organization's Covid-19 unique envoy in a CNN report.In this outcome, "the public's hopes are repeatedly raised and then dashed, as numerous proposed answers fall earlier than the final hurdle", the report said on Sunday.

According to Dr Anthony Fauci, Director of National Institute of Allergy and Infectious Diseases (NIAID), the vaccine could appear in 12-18 months.

Currently, a vaccine candidate for Covid-19 was identified by researchers from the Oxford Vaccine Group and Oxford's Jenner Institute. The capacity of the upcoming vaccine, ChAdOx1 nCoV-19, is primarily based on an adenovirus vaccine vector and the SARS-CoV-2 spike protein.According to the WHO, from a total of 102 candidate vaccines in the race, eight leading vaccines are in the human testing phase.What probably separates ChAdOx1 - known as recombinant viral vector vaccine - from the rest is the time it has promised to take, in order to deliver mass quantities.

However, no one is 100 percent sure.

Written by: Aravind R