A mix-and-match approach to Covid vaccines - using different brands of jab for first and second doses - gives good protection against the pandemic virus, a UK study has found.
I can't be sure - but working back, I'm pretty clear I caught the Delta variant of coronavirus during the summit of G7 (Group of Seven) nations, in Cornwall, probably on Sunday 13 June.
Coronaviruses were understudied for many years, as they were mainly associated with common colds
A large number of poorer countries receiving Covid-19 vaccines through a global sharing scheme do not have enough doses to continue programmes, the World Health Organization has said.
Australian doctors have reported a surge in the number of people cancelling their vaccine appointments, amid a new wave of caution over the AstraZeneca jab.
Plans to ease Covid restrictions in England on 19 July are "looking good", the prime minister has said.
Australia. New Zealand. Singapore. Vietnam. Japan. Hong Kong. South Korea. Taiwan.
The number of people who have been forced to flee their homes around the world has risen to a record 82 million despite the impact of the pandemic, the UN's refugee agency (UNHCR) says.
Exactly a year on from the discovery that a cheap steroid drug prevented Covid deaths, researchers say they have found another life-saving therapy.
Leaders of the major industrial nations have pledged one billion Covid vaccine doses to poor countries as a "big step towards vaccinating the world", Boris Johnson has said.
