katherine da costa. come along, let's see you. on the front line and among the first in line to receive a covid booster shot. here we go. role reversal. health staff at croydon university hospital have been rolling up their sleeves to top up their protection this winter. i came for it because i'm very keen to ensure that at all times i maintain as much protection not only for myself but also for the patients i work with. we were all vaccinated back. in december so obviously our immunity is waning somewhat so it's important we all get the booster- dose as soon as possible, really. on tuesday the government's advisory body on vaccines recommended giving booster doses to care home residents, health and care workers, the over—50s, 16 to a9—year—olds with underlying health care conditions and household contacts of people with a weakened immune system. those groups should receive a jab at least six