But there are questions that some people ask about its effectiveness, feasibility and symptoms, and here some experts answer these questions for the site “NBR“.
How does the vaccine work?
The Johnson & Johnson vaccine uses virus vector technology, and is genetically designed so that it can infect cells, but it will not multiply in the body, and people will not get a cold.
And like the “Pfizer” and “Moderna” vaccines, it provides genetic instructions, and instead of carrying it in small balls of fat, the genetic instructions are injected by the weak virus into the cells of the arm, and pieces that appear to be part of the protein cover of the Corona virus, that is, the structure that are made The virus uses it to stick to cells.
In contrast, the Pfizer and Moderna vaccines use a new technology, the messenger RNA, “mRNA”, which transfers genetic material directly to cells through fat molecules that absorb this genetic code by cells in the arm muscle, which then follow the genetic instructions to make small pieces that resemble a part of Corona Virus.
These small proteins stimulate the immune response, producing antibodies and immune cells that “remember” what they look like and will be ready to respond quickly in the event of a new attack.
What are the target age groups?
The vaccine is allowed for people 18 years of age or older.
How long does it take to obtain protection?
Data from Johnson & Johnson shows that most clinical trial participants developed a strong immune response 15 days after receiving a dose, with significant protection reached by day 29 of vaccination.
Is getting one dose of Johnson’s vaccine equivalent to getting two doses of similar vaccines?
Vaccine experts agree that all vaccines provide very good protection through the most important measure of action, which is that they prevent people from contracting serious diseases.
The head of the Department of Epidemiology and Biostatistics at the University of California, Kirsten Pepins Domingo, explained that the Johnson vaccine protects 66 percent of severe and moderate symptoms, and the percentage has increased to 72 percent in the United States, adding that the effectiveness of the vaccine in preventing severe symptoms may reach 85 percent after Four weeks after receiving the vaccine.
The vaccine was recently tested in several countries, including in South Africa and Brazil, where mutated strains of the Coronavirus have spread, and the vaccine has proven good efficacy against it, unlike the rest of the vaccines that were tested before the emergence of these strains.
Should I get the most effective vaccine?
Doctor Kersten answers: “Get any vaccine you can get as soon as you are eligible for it. The longer you are not vaccinated, the longer you will be exposed to the risk of infection with Covid-19 that could potentially kill you,” adding: “I consider this a race against time to preserve Your life. ”
Are there any caveats or risks for those with certain health conditions?
The American Center for Infectious Disease Control confirms that any of the Corona vaccines authorized for use in the United States can be given to people with underlying medical conditions, as long as they do not have contraindications, such as severe allergies to a previous dose of the vaccine or any of its components.
Specialists encourage patients with diabetes, cancer, coronary artery disease or other serious conditions to take the vaccine to preserve their lives, and for pregnant and lactating women, the decision should be optional due to the exclusion of pregnant women in the trials, especially with the CDC confirming that there are no likely risks to the health of women. Pregnant women and the fetus, especially as the data showed that these types of women are at risk of developing severe symptoms of Covid-19 disease.
What are the side effects of the Johnson vaccine?
As with the Moderna and Pfizer vaccines, the most common side effects are pain and redness at the injection site, chills, headache, nausea, body aches, fatigue, and fever for a day or two.
But many people who received these vaccines did not have any side effects, and if one of them felt pain or fever after receiving the dose, he could take a sedative or a fever reducer, but no analgesic should be taken before the dose because this could weaken the immune response. .