London: While over 100 vaccines are currently under pre-clinical trials and a couple of those have entered human trial stage, leading health experts have raised alarming questions about what if the world never sees a COVID-10 vaccine, as in the case of HIV and even dengue where there is no vaccine even after years of research.
According to a CNN report, "there is another, worst-case possibility: that no vaccine is ever developed". In this outcome, "the public's hopes are repeatedly raised and then dashed, as various proposed solutions fall before the final hurdle", the report said on Sunday.
Nearly four decades and 32 million deaths later, the world is still waiting for an HIV vaccine. An effective vaccine for dengue fever, which infects