The US top infectious diseases expert says he is confident a vaccine will be available by end of 2020.

The most senior infectious diseases expert in the US, Dr Anthony Fauci, has told US lawmakers he was hopeful an effective Covid-19 vaccine will be readily available by the end of 2020.
We hope that by the time we get into late fall and early winter, we will have in fact a vaccine that we can say that would be safe and effective, Dr Fauci told a House of Representatives subcommittee on Friday.
One can never guarantee the safety or effectiveness unless you do the trial, but we are cautiously optimistic this will be successful.
Dr Fauci expressed scepticism of vaccine efforts in China and Russia, telling lawmakers he did not believe we will have to depend on other countries to get us vaccines.
Governments around the world have pledged billions of dollars for a Covid-19 vaccine, some of which have entered late-stage human trials.
However, it is still uncertain which, if any, of the vaccines may work until more testing has been done.
Read more about the global effort to develop a Covid-19 vaccine.