Herd Immunity and Covid-19 Metamorphosis
With various levels of vaccine efficacy ranging from 60-94 percent, asymmetric vaccination results and the development of various virus strains, the government must recalculate a rational vaccination target.
Covid-19 vaccination programs are currently underway massively around the world. About 550 million doses of vaccine have been injected into about 4 percent of the world's population. Roughly, more than 2.5 million doses of vaccine are given each day.
Several countries are even speeding it up through crash programs. They want herd immunity to be achieved as soon as possible. In Gibraltar, as much as 92 percent of the population has been vaccinated, in Israel 60 percent, Britain 44 percent and Northern Ireland 38 percent.
Covid-19 vaccination does have two substantial objectives, namely individual protection and community protection or herd immunity. After being vaccinated, people will form antibodies that protect themselves from Covid-19. However, this protection is not 100 percent; depending on the efficacy of vaccines and the body's ability to build immunity. This means that people who have been vaccinated still have a chance of becoming infected, albeit a small one.