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Vanadium 50 said:A source that people are speculating?
Is there a reason why people would expect adverse "effects of a vaccine may manifest/increase over time." Certainly we don't have long term data on vaccine safety that goes beyond ~2 months, so we can't say that there are no adverse effects that would manifest over a longer time period. However, this is different than making the claim that we would expect a vaccine that shows good short term safety to have adverse effects that would manifest over a longer time scale. For example, from our experience with many other vaccines, adverse events from vaccines tend to manifest fairly soon after vaccination and are temporary. While the mRNA vaccines are different from other vaccines, there is no reason to think that the technology would be more likely to cause longer-term effects as the mRNAs are quickly degraded in the body.