One of Israel’s Health Medical Organizations (HMOs) accidentally used a half-sized needle to apply the first Pfizer vaccine into 1,000 Israelis. But when 60% of them were tested three weeks later, they were all found to have high levels of antibodies. The US CDC was pleased to hear the outcome.

https://worldisraelnews.com/right-injection-wrong-needle-israel-accidentally-finds-out-if-the-corona-vaccine-will-still-work/