A study about the number of Coronavirus breakthrough infections during post vaccination period

Aim: There are a number of vaccines against SARS CoV-2 used to create immunity belt to reduce the infections, therefore we decided to conduct a questionare study among the vaccinated persons from different countries to find the vaccine effectiveness. Method: A telephone as well as person meeting were conducted with 30 different vaccinated with the following questions: how many times they vaccinated were, how many times have they gotten the breakthrough infections and how long was this infection. Results: The analysis indicate that almost all vaccinated persons have breakthrough infection. The airtravel was discovered as one of causes, where some got the breakthrough infections. There were a few fatalities, but the hospitalization was rare. The results do not support the fact that vaccines can provide 95% immunity as claimed in many publications. Conclusion: The most of vaccinated persons got breakthrough infections of different intensities. It is very clear that vaccination caused immunity were not sufficient to prevent infections, which cause different degree of complications. There is an urgent to improve these vaccines and the question is whether 5th and future dose will be any use in the normal population