The Covid-19 pandemic is the most recent health disaster that has affected entirely the whole world ( World Health Organization , 2020) It has been a very challenging issue to predict the COVID-19 vaccination trend. A variety of health professionals , programmers, researchers and experts have been trying to tackle the spread of the virus by the use of different perspectives. There has been registered a very high number of vaccines initiated by medical scientists, which has encouraged me to be more curious on wanting to learn more about the proceeding vaccine programs and  work on them too .

By early 2021 the CIVID -19 vaccines had already been administered , these vaccines proved to be safe and effective in protecting people all over the globe against infections of SARS-CoV-2 , hospitalizations and loss of lives ( Agrahari et al., 2021 ) . However, six months after full vaccination the effectiveness against the infections of SARS-CoV-2 had a sudden decline, which has necessitated a requirement for a COVID-19 booster dose. As time went by, some countries came up with additional COVID-19 vaccine doses, which were mainly for groups at risk of succumbing as a result of COVID, in order to boost the ir immune and extend their protec tion against SARS-CoV-2.