Russia has started vaccinating animals against coronavirus, officials say.
A single-dose Covid vaccine made by Janssen has been approved for use in the UK by the medicines regulator.
Moderna says its Covid vaccine is "highly effective" in adolescents aged 12 to 17.
People aged 30 and 31 in England are being invited to book to have their first dose of Covid vaccine.
Sniffer dogs could contribute to efforts to prevent the spread of Covid as society reopens, according to scientists.
Vaccinating children is routine and widely accepted - measles, mumps, polio, diphtheria, rotavirus, multiple strains of meningitis, whooping cough… the list goes on. All this starts from just a few weeks old.
A large UK study suggests having coronavirus around the time of birth may increase the chance of stillbirths and premature births - although the overall risks remain low.
Offering children in some richer countries a coronavirus vaccine before some high-risk people in poorer ones is "morally wrong", a group of MPs has been told.
The international scheme to ensure equal access to Covid-19 vaccines is 140 million doses short because of India's continuing Covid crisis.
It took 31-year-old Sneha Marathe half a day to book an appointment online for a Covid vaccine.
