That there are hot lots of vaccines that cause more side effects or vaccine injuries than other vaccine lots is a common vaccine myth.
Like most other things, vaccines are made in batches or lots.
These lots are then tested “to ensure safety, purity, and potency.”
Vaccine lots aren’t all the same size though. A small lot is going to appear to be a “hot lot,” having more reports of side effects than a much larger vaccine lot. And a report of a vaccine injury in VAERS, where most reports of hot lots come from, doesn’t mean that the vaccine actually caused the injury or side effect.
Interestingly, the first edition of the National Vaccine Information Center’s newsletter published a list of “especially toxic” DPT vaccine lots. Their DPT vaccine Hot Lot list was compiled by finding lot numbers “which are associated with the highest numbers of deaths, injuries and hospitalizations reported to the government’s Vaccine Adverse Event Reporting System.”
Again, VAERS is a passive reporting system. Since anyone can report a reaction, simply being in VAERS doesn’t mean that that the reaction was caused by a vaccine.
For more information:
- Vaccine Safety
- Vaccine procurement and lot release
- Misconceptions about Hot Lots
- 2013 Voluntary Recall of One Lot of Gardasil HPV Vaccine