Yes you can still have COVID but your less likely to end up in ICU If you have a life-threatening illness e.g. Cancers, waiting for a transplant or those who just had one , HIV , lupus etc , also you can carry Covid to other without any symptoms and could pass it on to others who have life-threatening illnesses who haven't had the COVID vaccine and mask makes it unlikely but remember to wash your hands before and after you touch thing like doors, when you got out in public and when you returned try not to touch your face and wash your hand if you have touched, and before you touch people or things