They are saying now that one dose gives good protection from serious illness, and gives some protection from transmission too.
It was interesting to hear Chris Whitty on one of the briefings last week say that he considered it their professional duty for Health and social care staff to be vaccinated so they are helping to protect the vulnerable in their care.
If there is a medical reason , then of course , they should be exempt, but if they are merely choosing not to be vaccinated (although this is their right), perhaps staff need to think more about the risks to those in their care.
It annoys me that for months family have not been allowed indoor visits to care homes because we were considered a "risk" to residents and staff, but now there are staff not being vaccinated who are a "risk" to residents, but are still allowed to continuing working in the home, giving personal care etc.