While over 100 vaccines are currently under pre-clinical trials and a couple of those have entered human trial stage, leading health experts have raised alarming questions about what if the world never sees a COVID-10 vaccine, as in the case of HIV and even dengue where there is no vaccine even after years of research.

कुछ साइंटिस्ट का कहना है कि कोरोना वैक्सीन इतना जल्द
संभव नहीं हो सकता। कोरोना वायरस का वैक्सीन बनाने में कम से कम 16 साल लग सकते हैं