Covid vaccine tracker: when will we have a coronavirus vaccine? More than 170 teams of researchers are racing to develop a safe and effective vaccine. Here is their progress the Guardian

More than 170 teams of researchers are racing to develop a safe and effective vaccine. Here is their progress. 

......Researchers in the United States set an audacious goal in January to develop a coronavirus vaccine within 12 to 18 months. This would be a world record. The mumps vaccine is considered to be the fastest to move, in four years, from scientific concept to approval in 1967. The quest for an HIV vaccine continues, 36 years and counting....