Both vaccines in use at present in Australia are very safe based on what is currently understood, with very low hospitalisation rates. But equally it is early days yet and so both short-term and long-term adverse reactions are still not all known.
However despite the hype by some both do have adverse reactions. Both have led to people being hospitalised. So taking Pfizer is not a guarantee of not requiring hospitalisation for a vaccine related adverse reaction.
While we do know know from media reports that there has been Pfizer Vaccine related hospitalisations is in Australia, but I am yet to locate any statistics on how many. Though also there have been a lot less Pfizer vaccinations that AZ vaccinations in Australia so far.
Looking at Israel who have had a large Pfizer rollout we see:
Few complaints ended in hospitalization — an average of 17 patients per million after the first shot, and three patients per million after the second shot. Yehezkeli said doctors expected a few patients to have significant side effects, and he has personally treated a patient who had partial facial nerve paralysis after her second shot, but said the statistics show that incidence is low. His patient recovered.
It was the first major real-world analysis of side effects, involving many times the numbers involved in Pfizer’s clinical trials. Its findings, which are accurate to January 27, match the expectations held by health organizations around the globe on the basis of trial data.
17 per million hospitalisations for Pfizer seems very comparable to the Australian rate for AZ.
However I do note that the ATAGI in Australia has recently stated:
Side effects to the Comirnaty vaccine continue to be reported to the TGA and are consistent with what has been observed internationally. This week, describe the reporting of diarrhoea and vomiting as a suspected side effect of the Comirnaty vaccine.
Also while AZ has concern with blood clots Pfizer has its own adverse reactions, as well as adversereactions in common with AZ:
The agency is reviewing several dozen reports that teenagers and young adults may have developed myocarditis after vaccination, officials said. But the agency has not determined whether the vaccine caused the condition.
www.nytimes.com
Israel is examining a small number of cases related to myocarditis in individuals inoculated with Pfizer and BioNtech’s Covid-19 vaccine.
www.pharmaceutical-technology.com
Or
PRAC recommended adding a new side effect to Pfizer’s product information for people with dermal fillers, which are soft, gel-like substances injected under the skin. The committee now believes there’s “at least a reasonable possibility” the vaccine causes facial swelling in people with the fillers.