WHO reported that in the past week, the number of reported confirmed cases reached 11 million, which is mainly related to the spread of Ba.2 in Omicron and the cancellation of mask bans in some countries and the abandonment of the fight against the epidemic, etc. In view of this, some countries have started to act in advance, Israel, the United States, Germany and Hong Kong have begun to inject the fourth dose of the new crown vaccine, so do we want to fight.
In fact, two months ago, someone has proposed to give the fourth dose of the new crown vaccine, and called sequential vaccination or called heterologous vaccination, the so-called heterologous vaccination refers to the injection of vaccines with different research and development paths, such as the first and second injection of inactivated vaccines, the third injection of adenovirus vector vaccine, if the three injections of inactivated vaccines are called homologous vaccination, heterologous vaccination benefits are to avoid the side effects of previous vaccination, antibody production efficiency is higher.
So do we really want to get vaccinated? Data show that after vaccination, although it can not prevent the virus infection, but can reduce the rate of severe illness and mortality, Dr. Zhang Wenhong issued a document on March 7, the fifth wave of the epidemic in Hong Kong has 1561 deaths, of which 94.7% are elderly, 91.3% have not completed vaccination. In all cases, the case fatality rate for completing two doses was 0.04%, the case fatality rate for unvaccinated was 1.25%, and the case fatality rate was 31 times that of vaccination. Among them, the elderly over 80 years old who have not been vaccinated have a case fatality rate of up to 8.6%, and those who have received two doses of the vaccine have a case fatality rate of 1.57%. It can also be seen from this that the elderly need to be injected with the new crown vaccine, because their mortality rate after infection is very high, and the injection of the new crown vaccine has obvious protective effect, and the mortality rate is much lower.
So is the fourth dose of the vaccine to be given? I think it is necessary to distinguish between people who do not have serious side effects in the first three injections, you can consider injecting a fourth injection, which is conducive to individuals avoiding infection with the new crown, some people will say, vaccination is not unable to prevent infection, can only reduce the rate of severe illness? Everyone misunderstands that the new crown vaccine only can not completely prevent the virus infection, but it does not mean that the infection rate cannot be reduced, just like wearing a helmet on the battlefield is not completely able to prevent being killed by bullets, but if the bullet does not penetrate the helmet, it will not be shot, even if it penetrates the helmet, it can also reduce the serious injury rate and mortality.
The next question is whether the injection of vaccines has serious side effects, I have indeed been exposed to patients with severe side effects of the new crown vaccine, some of which are mainly pulmonary manifestations, careful examination found that these people themselves have the problem of autoimmune disorders, that is, rheumatism, the characteristics of this disease are that some patients' symptoms are very hidden, there will be no symptoms such as arthritis, joint soreness and other symptoms that everyone thinks, some people only have dry mouths and dry eyes, such patients can not be found out without going to the hospital for examination , and rheumatic immune disease patients are clearly not injectable on the new crown vaccination brochure, some people after injection of the disease is aggravated, and this disease sometimes invades the lungs to cause pulmonary fibrosis, the patient I met is like this, usually in good health, cough and asthma after injection, soon can only lie on the bed asthma, now after hormone and anti-rheumatic treatment after a lot better, this patient later went to the rheumatology and immunology department to see a doctor, the doctor there said that she is the fourth case of patients with serious side reactions after injection of new crown, Rheumatism was not detected before, and it suddenly worsened after injection.
In addition to this few cases, have not seen other serious side reactions of patients, most of the side reactions are mainly fever, injection of local pain, some people will also have cough, throat discomfort and other symptoms similar to influenza, a week or so, I myself injected the second injection after the muscle pain for three months, and later analyzed and I finished the vaccine strenuous exercise, the injection site is too low related, the injection day is troublesome, the sleeve is not in place.
Therefore, vaccination should be best vaccinated, it is difficult to do the whole people, and the vaccination rate should reach more than 70%, so as to form an effective transmission barrier and prevent the spread of the epidemic, even if there is a new virus variant, there is no need to be afraid.