💉✨ In 1967, a needle-free injection method called the jet injector was widely used for mass vaccinations. This device delivered vaccines through a high-pressure stream that penetrated the skin without a traditional needle. ✅ 🌍 It played a big role in large immunization drives like the smallpox eradication campaign, helping healthcare workers vaccinate hundreds of people quickly. ⚠️ However, safety concerns arose later — improper sterilization between uses sometimes led to the spread of bloodbo
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💉✨ In 1967, a needle-free injection method called the jet injector was widely used for mass vaccinations. This device delivered vaccines through a high-pressure stream that penetrated the skin without a traditional needle. ✅ 🌍 It played a big role in large immunization drives like the smallpox eradication campaign, helping healthcare workers vaccinate hundreds of people quickly. ⚠️ However, safety concerns arose later — improper sterilization between uses sometimes led to the spread of bloodbo
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The history of needle-free jet injectors traces back to the 19th century, originating from accidental high-pressure fluid discoveries. Modern development surged in the 1930s, leading to devices like the Ped-O-Jet for efficient, painless vaccine administration by the 1960s. In 1967, jet injectors played a key role in the WHO’s smallpox eradication campaign, enabling mass vaccinations in Nicaragua and beyond. Nicknamed “la pistola de la paz,” they used compressed air to deliver vaccines, accelerat
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