Based on decades-long studies with other viruses clearly showing that even a single amino acid change (mutation) may lead to infection- or vaccine-induced nAb and CTL resistance, the answer (most likely) could be negative. New SARS-CoV-2 strain (s) are carrying up to 17 such mutations. Furthermore, if the answer is no, then current vaccinations should be halted, due to the clear danger that they may cause massive/catastrophic harm to vaccinees due to well-known immunological phenomena, described for HIV, Dengue, influenza etc., such as immune interference, original antigenic sin/heterologous immunity. Curiously, the companies are not reporting yet the results of such easy test (only 3-4 days need to see whether vaccine-induced Abs are able to neutralize new viral strain (s). Most probably, the companies already know the answer, then, guess why they are not reporting any data?