US Covid-19 vaccinations

US President Joe Biden has again appealed to all Americans to be vaccinated, and this week he is expected to announce a Covid vaccination requirement for federal employees. We speak to health reporters in two American states, in Alabama where vaccination rate is the lowest in the country, and in Vermont which continues to lead the nation with the highest percentage of adults vaccinated.

We'll speak to one of our regular coronavirus experts Dr Pedro Hallal, an epidemiologist from the Federal University of Pelotas in the south of Brazil.

And, Gymnast Simone Biles has withdrawn from Thursday's individual all-around final in Tokyo, following her earlier decision to pull out of the women's team final. We'll bring all the reaction to the latest.

Picture: A woman holds a small bottle labeled with a "Coronavirus COVID-19 Vaccine" sticker and a medical syringe in front of displayed USA flag in this illustration taken, October 30, 2020. Credit: REUTERS/Dado Ruvic