Health experts say vaccinating against RSV infection can reduce hospital admissions by over 80%.
Work is needed for more youngsters to be vaccinated in Devon and Cornwall, a health boss says.
A restricted zone for Dumfries and Galloway and parts of Ayrshire will be put in place on Thursday.
Aedes aegypti mosquitoes and larvae have been detected in east London homes and are being destroyed.
This year's jab has a few tweaks, including changes to better combat last year's Super-K strain.
Health officials urge parents to make sure their children are immunised.
A control zone covering most of Dumfries and Galloway and parts of Ayrshire has been put in place.
A review of the vaccination status of hospital staff has been carried out in Worcestershire.
Deputy chief veterinary officer says warm weather is providing perfect conditions for midges.