Do you know why some people have a small round scar on their upper left arm? This is a scar due to vaccination for smallpox. This vaccine was very common before the 70s. Physicians used a live Vaccinia virus in order to activate an immune reaction that would protect people from the Variola virus that caused smallpox.
After the vaccination was done, blisters formed and afterwards, they developed a crust and healed in a few weeks. In the end, there was a round scar left. The doctors used a bifurcated needle dipped into the Vaccinia solution to deliver the vaccine. The person’s arm was poked couple of times and each time the needle broke the skin, a small amount of the vaccine was inserted, which caused blistering. This is most likely why the scars are rather large.
What Happens After The Insertion Of The Vaccine?
A small swelling appears on the vaccinated spot and it lasts for 6 to 8 hours. Afterwards, the swelling disappears. 6 to 8 weeks later, another swelling appears, just like a mosquito bite. This swelling starts to grow and forms a nodule that bursts and releases a fluid and an ulcer is created. The ulcer heals, however there is a scar left. In some people, the ulcer and healing process recurred 2 to 3 times.
After The 70s
In the West, after the 70s, smallpox disappeared; therefore, this vaccine was not a practice, unless somebody went to a country where the virus was still active. In the 80s, the Variola virus was eradicated from the entire population and there was no longer a need for smallpox vaccines.
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