The dangers of not getting vaccinated against Covid-19.

CNN quoted Dr. William Schaffner, a professor of infectious diseases at Vanderbilt University, as saying: "Those who do notvaccinationThey can become factories for producing variants. The more unvaccinated people there are, the more opportunities the virus has to thrive.”

The coronavirus cannot survive and thrive outside of a living cell, so it needs that cell to exist. Without vaccination, you could become a target for the virus. The virus will enter your body, and once inside, it will create millions of copies. However, this frantic replication process sometimes goes awry, and mutations are produced.

A series of new mutations have emerged.

All viruses can mutate, or at least change and evolve. Most changes don't really matter to the virus, and may even weaken it. However, sometimes the evolution of a virus produces a random mutation that gives it an advantage, such as better transmissibility, more efficient replication, or the ability to cross-infect multiple hosts.

Andrew Pekosz, a microbiologist and immunologist at the Johns Hopkins Bloomberg School of Public Health, said: “Every time a virus mutates, it gains a new platform to create even more mutations. Viruses that don’t spread can’t mutate.”

Variants of the novel coronavirus have now appeared all over the world. These include B.1.1.7 (Alpha), first detected in the UK, and the B.1.351 (Beta) variant found in South Africa. The Delta variant, or B.1.617.2, first appeared in India. A number of other variants have also appeared in the US, including B.1.427 (Epsilon) in California and B.1.526 (Eta), first detected in New York.

Last summer, the D614G mutation spread from Europe to the US and then throughout the world. This change made the virus more effective at replicating, thus replacing the original strain. This version existed before people began naming variants.

Most of the newer variants have introduced further changes to D614G. The Alpha variant, also known as B.1.1.7, became the dominant variant in the US in late spring due to its enhanced transmissibility. Now, the Delta variant is even more easily spread and has become the dominant variant in many countries, including the US.
Tests on human respiratory tract cells in Petri dishes showed that Delta replicates much faster than previous variants. This means that the number of viruses lurking in people's respiratory tracts may be higher. Samples taken from the noses and throats of test participants demonstrated this, with a higher number of viruses found compared to other variants.

Vaccines slow the spread of the virus and reduce deaths.

Vaccination can help slow the spread of the virus but cannot prevent it completely. Current Covid-19 vaccines do not prevent all infections, nor can they prevent people who have been infected from transmitting the virus to others. However, it is undeniable that vaccination makes it more difficult for the virus to spread.

The Economist quotes experts as saying that people who have been vaccinated against Covid-19 with AstraZeneca and Pfizer vaccines, and then contract the Alpha variant, have only half the risk of transmitting the virus compared to unvaccinated individuals. That is why doctors and public health officials have been strongly encouraging more people to get vaccinated.

British studies have found that the Delta variant is about 60% more transmissible than the Alpha variant. Approximately half of the adults infected in the recent Delta variant outbreak in Israel were those who had received the Pfizer vaccine.

In the UK, where the majority of the population is vaccinated, and Uganda (where many people have not yet been vaccinated against Covid-19), the Delta variant is present in most new infections. A similar situation is occurring in Australia and many areas in Asia.

The good news is that, according to vaccine research by Western companies, vaccination reduces the likelihood of death and severe illness in people infected with the coronavirus, regardless of the variant.

The transmissibility of the Delta variant, coupled with the easing of restrictions, has led to a resurgence in infections in the UK. However, thanks to vaccination, the number of deaths has not increased. According to research published in The Lancet, in Scotland, the AstraZeneca vaccine is up to 60% effective in preventing disease arising from Delta variant infection, while the Pfizer vaccine is up to 79% effective.

Therefore, according to scientists, to maximize the health benefits for the community, as many people as possible should be vaccinated, to the point where the virus is no longer easily transmitted from person to person. However, there are still gaps in vaccination worldwide, creating space for the virus to thrive.

Currently, the spread of the Delta variant is widening the gap between vaccinated and unvaccinated individuals. John Moore, a virologist at Weil Cornell Medical School, said: “If you’re vaccinated, this doesn’t change your mind. But if you’re unvaccinated, you’re at a much higher risk of infection.”