Dr Philippa Whitford @Dr_PhilippaW
@NotAMayBot Not clear how long natural immunity lasts & PM’s #COVID19 infection >1yr ago. Unlikely to be long-term with #Coronavirus, so could catch it again. Also vaccinated but, as with Sajid Javid, can still catch #DeltaVariant (AZ ~55% protection, Pfizer 88%) but less severe illness. — PolitiTweet.org