1.3K views · 19 reactions | Needle-free injection method used in 1967. Jet injector https://en.wikipedia.org/wiki/Jet_injector | Howard Farran DDS, MBA | Facebook

💉✨ 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