You should be up to date on routine vaccinations while traveling to any destination. Some vaccines may also be required for travel. Ask your doctor what vaccines and medicines you need based on where you are going, how long you are staying, what you will be doing.

The following links gives you an overview but will not replace the advise from your doctor

Information from the Center for Disease Control (CDC)

Travel advice: coronavirus (COVID-19)

Guidance for British people travelling overseas during the coronavirus (COVID-19) pandemic.

Information from the Foreign Office (UK)