RE: UK appoints Kate Bingham as chair of its Covid-19 vaccine taskforce19 May 2020 09:24
Inanaco,
The bb here yesterday was full of posts (including from yourself) criticising the Oxford vaccine and many were assuming that the only reason it had received Government funding was the Oxbridge connection. I simply posted the facts to explain why ChAdOx1 is being funded.
We know it's a new virus and the reason why Oxford were able to move so quickly is because they had an existing vaccine which they had developed as a vehicle for vaccines against other infectious diseases including coronaviruses. It was sitting there, ready to have new targets plugged in and the Oxford team started working on that as soon as the Chinese released the genome of COVID-19, before the world even knew it was a transmissible disease.
You are correct, in the phase I MERS clinical trial, 44% of patients produced neutralising antibodies and patients also produced MERS spike-specific T-cell responses which lasted for a year. It was a phase I trial - primarily looking at safety and dosing and they are now running a phase Ib with different dosing regimes to increase responses. I don't know whether they'll be successful but there are still no vaccines or treatments for MERS so any vaccine that limits the disease even in only 44% of patients has to be worth further evaluation,
Finally, of course they are still developing the platform on the job - that's the whole point of clinical trials, to identify optimum dosing levels, frequency, patient demographics etc. etc and you fine tune as you go along.