And the answer is yes! Some vaccines have been known to be contaminated with bacteria or fungi, and when they get injected into someone’s em they have them an infection!
Other vaccines have been thought to cause some diseases such as autism but have since been disproven!
And most vaccines might make you feel like you have a mild case of the flu- because they are stimulating your immune system! But that’s a good thing on the long term 🙂
Believe it or not, I was just reading about something similar to this today!
In the very early 1900s there was a horse called “Jim” whose blood was used to produce a tetanus antitoxin. Unfortunately he eventually got tetanus -and 13 people who received his last batch of ‘antitoxin’ died of tetanus.
But an antitoxin is not a vaccine. Daryl has listed some of the ways that using a vaccine can result in the vaccinated people getting disease, but there is another way. Even now people can be inoculated using an ‘attenuated’ strain of the bacteria. (This means that the bacteria is alive, but has been made less dangerous). Sometimes the bacteria reverts back to the pathogenic strain – with serious consequences. In some cases, even if the bacteria remains attenuated, people who are immunocompromised may develop the disease.
But the odds of this occurring are very very low. Much lower than the risk of you getting the disease if you don’t get vaccinated.
ps when will you be starting your degree in Science, maddyplows? Soon?
Comments
maddyplows commented on :
What kind of career would you each suggest for someone considering persuing science into university?