Saying heart attacks can be deadly doesn't mean it's about the vax. Remember, Q said multiple meanings exist. The real meaning is not always the obvious meaning.
https://www.usccb.org/prayers/act-consecration-immaculate-heart-mary-russia-and-ukraine
https://scd.org/sites/default/files/2017-09/ACT%20OF%20CONSECRATION%20OF%20THE%20UNITED%20STATES%20TO%20THE%20IMMACULATE%20HEART%20OF%20MARY.pdf