Israeli scientists have shown an increase in heart attacks in vaccinated

Cardiovascular adverse conditions are caused by coronavirus disease
2019 (COVID-19) infections and reported as side-effects of the
COVID-19 vaccines. Enriching current vaccine safety surveillance
systems with additional data sources may improve the understanding
of COVID-19 vaccine safety. Using a unique dataset from Israel
National Emergency Medical Services (EMS) from 2019 to 2021,
the study aims to evaluate the association between the volume
of cardiac arrest and acute coronary syndrome EMS calls in the
16–39-year-old population with potential factors including COVID-19
infection and vaccination rates. An increase of over 25% was detected
in both call types during January–May 2021, compared with the years
2019–2020. Using Negative Binomial regression models, the weekly
emergency call counts were significantly associated with the rates
of 1st and 2nd vaccine doses administered to this age group but were
not with COVID-19 infection rates. While not establishing causal
relationships, the findings raise concerns regarding vaccine-induced
undetected severe cardiovascular side-effects and underscore the
already established causal relationship between vaccines and
myocarditis, a frequent cause of unexpected cardiac arrest in young
individuals. Surveillance of potential vaccine side-effects and
COVID-19 outcomes should incorporate EMS and other health data
to identify public health trends (e.g., increased in EMS calls), and
promptly investigate potential underlying causes
(https://go.nature.com/3vCO6lJ).