What effect could the US support of waiver on Covid vaccine patents have?

Available for over a year

Many poorer countries around the world are struggling to get Covid vaccines. So the news that US President Joe Biden says they should be able to make their own copies free of charge, as the US now supports a waiver to intellectual property protections for coronavirus vaccines, will come as a huge relief. We get the reaction of the President of the Public Health Foundation of India. As the withdrawal of international troops from Afghanistan approaches, one of the concerns is the situation of women in a country where, as we hear, poverty and access to health care still dominate their lives. And relief in Nigeria as 27 students abducted in Kaduna state walk free - but how did their release come about?