A vaccine contains a DNA sequence that is used to produce a protein that will allow the body to mount an immune response against the foreign protein. After the protein develops in the body, the injected mRNA is degraded by cells. The mRNA, however, remains in the human body for a few days. The immune response stimulates the production of antibodies. These antibodies help the body develop an immunity against the pathogen. 병원마케팅
Live-virus vaccines are unstable, and have the potential to cause a mild infection of the recipient, as well as secondary bacterial infections. Those with weakened immune systems are particularly susceptible to the dangers associated with these vaccines. Additionally, a person who is infected sheds the real virus, and it can spread to others. Up to 50 percent of shed viruses are the original vaccine strains. Vaccines should only be used by those who are immune-competent and healthy.
In March 1976, U.S. President Gerald Ford called for a mass vaccination program and convened a high-profile meeting with scientists from the World Health Organization. The president’s call for an inoculation program received prominent media coverage. A WHO official who was not named stated that the organization was “surprised” by the plan, noting that no other country had adopted mass vaccinations for the virus. The WHO was forced to rethink its policy.
To create a virus vaccine, scientists must first develop the virus. Inactivation stops the virus from multiplying. Sinopharm and Sinovac Biotech are developing SARS-CoV-2 vaccines. Other vaccines are under development and are based on parts of bacteria or viruses. The SARS-CoV-2 vaccine focuses on the spike protein on the surface of the virus. Its toxicity is less than 1 percent and can protect the body from SARS.
The WHO’s recommendation is a rehash of the events that led to the 1958 influenza pandemic. The vaccines did not protect citizens adequately, and were not available before the pandemic reached its peak. When this happens again, vaccine developers will have no choice but to rush into the pandemic too early. This is the exact opposite of what is intended. But the benefits of vaccines outweigh any risks. So, the question remains, can a virus vaccine be dangerous?
A new vaccine based on messenger RNA is being developed by Pfizer-BioNTech. It is expected to be approved by the FDA by the end of 2020. This vaccine is a sure fire solution to the next pandemic, but its fast approval may be a concern. If the vaccine is a candidate for use in humans, it should be tested in a controlled environment first. Otherwise, it may lead to unintended consequences, which could jeopardize public health.
Vaccines protect the population from many types of disease and can prevent the spread of disease to the unvaccinated. Because they help the immune system create antibodies to fight off viruses and other diseases, they are much safer than catching these illnesses. Despite the concerns regarding the possibility of virus vaccines, vaccinations have a long track record. It can protect a person’s immune system for years. However, a vaccine can have unexpected side effects, and the vaccine must be given promptly to avoid the dangers of the disease.