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thundara · 4567 days ago · link · · parent · post: According to a huge OHRI study, flu shots during pregnancy are not only safe, they actually have unexpected benefits
Careful, it's not a blind test, all those women opted to take the vaccine. Easy explanation is that those who took the vaccine tended to pay attention to their health and environment more, unless the actual paper mentions controlling for that somehow?
This is a "Meta" study. Meaning that they pulled data from a database and ran the study off the data. They were studying differences between preterm birth (PTB), and small-for-gestational-age (SGA) births in women that had the vaccine and those that had not. While it's not a full study and not blinded it is free from bias as they are looking at data and not the opinion of the mother and doctor.
Not to say that you are not correct, though. A full double blind study that confirms this result would be ideal.