Hi Scuba,
I think your last observation is the relevant one.If one were willing and able to screen all of potential patients to be vaccinated for prior medical conditions then there is the danger of blaming the vaccine for the adverse event-in terms of the optic events mentioned I would ask how many had prior sight issues such as macular degeneration which as we know if not treated can lead to blindness.
On a general basis,only a personal opinion but,the general health of the UK population is quite poor;I have looked at OECD data on obesity and we are not far behind USA,Mexico and Portugal is nearly on a par with us;add in being overweight,diabetes,pulmonary issues such as asthma,cardio pre conditions we are not in a good place.Preventative medicine in UK is not in a good place either.
On a personal basis when some weeks ago I had the Pfizer jab the screening was minimal and focused on being on blood thinners such as warfarin or heparin and also previous allergic episodes;my CML and tki were judged to be not a problem.My reaction was very light.My partner much younger than me and Thai ,as a carer, was given Astra Zenica a few days ago and is having some considerable side effects but all in line with government advice and with no need for medical intervention;her immune system is reacting quite strongly.
At a societal level UK scientific advisers and politicians hope that the take up of vaccines say up to at least 80 per cent plus of the population will lead to some sort of herd immunity developing.On a personal level my own risk analysis is that given my age if I contract Covid I might not survive so if the vaccine means that if at worse I get a mild version and also avoid hospitalisation then great.
I would suggest that we run similar risks with tkis. Nilotinib is hard on the heart but how many patients are screened with an ECG prior to being treated with it? For Dasatinib if one has had any prior pulmonary illness then it might not be for you as it could lead to higher risk of pleural effusion-how many have a CT scan prior to being treated with this drug? The last line tki Ponatinib has a black box FDA warning on it due to vascular events so in the event of a fatal adverse event do we blame the drug or the prior condition or both?
I would conclude that in terms of side effects of a drug / vaccine/ procedure we need to take account of co- morbidities and prior health issues-but that takes time and resources.
Regards
John