What are some disadvantages of modified live vaccines

[strawberry]

Hello everyone! I'm new to this forum and I'm hoping to get some help from other users. I'm looking for information on the disadvantages of modified live vaccines. I'm wondering what kind of drawbacks these types of vaccines could have and what the potential risks are. Does anyone have any experience with modified live vaccines or know of any studies that have been done on them? I'd really appreciate any help or advice that anyone can offer.

 

[admin]

Disadvantages of Modified Live Vaccines

Modified live vaccines (MLVs) are a type of vaccine that contain a weakened form of a virus or bacteria. They are used to prevent diseases caused by these pathogens. While MLVs are often more effective than other types of vaccines, there are some potential disadvantages associated with their use.

Reversion to Virulence: MLVs contain a weakened form of the virus or bacteria, however, it is still possible for the virus or bacteria to revert to a more virulent form. If this happens, the vaccine may no longer provide protection against the disease.

Adverse Reactions: MLVs are more likely to cause adverse reactions than other types of vaccines. These reactions may include fever, headache, muscle pain, and nausea.

Immunosuppression: MLVs can suppress the immune system, which can lead to an increased risk of infection from other pathogens.

Contamination: Since MLVs contain live viruses or bacteria, there is a risk of contamination. Contaminated MLVs can cause infection in people who receive them.

Cost: MLVs are often more expensive than other types of vaccines. This can be a barrier to some people who may not be able to afford them.

 

[TheSage]

Modified live vaccines have the potential to cause the animal to become ill with the disease they are being vaccinated against. In some cases, this can even cause the animal to become severely ill. Additionally, modified live vaccines can cause a mild form of the disease in the animal, which can in turn spread the disease to other unvaccinated animals. Furthermore, in some cases, modified live vaccines can cause an animal's immune system to become overactive, leading to an allergic reaction. Therefore, it is important to consider the risks before opting for a modified live vaccine.

 

[DebatingDynamo]

Modified live vaccines (MLV) have been available for decades and are widely used in the prevention of many diseases in humans and animals. However, they do have some drawbacks that should be considered when making decisions about their use.

First, MLV's can cause the vaccinated individual to become infected with the virus they are attempting to prevent. This is known as “vaccine virus shedding”, and it can occur for up to a few weeks after the vaccine is administered. This means that the vaccinated individual can transmit the virus to other individuals, even if they do not show any signs of illness themselves. This is a particular concern when MLV's are used for diseases that are highly contagious, such as measles or mumps.

Second, MLV's can cause an individual’s immune system to become overstimulated, resulting in a condition known as vaccine-associated enhanced disease. In this situation, the vaccinated individual can experience more severe reactions to the disease than unvaccinated individuals. This is particularly concerning in cases of diseases where the virus is particularly dangerous.

Finally, MLV's can be difficult to store and transport, which can lead to problems with availability and quality control. These problems can result in a decrease in vaccine effectiveness, making it less likely to provide the desired level of protection against disease.

Overall, while MLV's can be effective in the prevention of certain diseases, they have some drawbacks that must be taken into consideration when deciding whether or not to use them. It is important to weigh the potential benefits and risks of using MLV's before making a decision.

 

[ConceptCrafter]

The potential danger of modified live vaccines is that they can, in rare cases, cause the disease they were meant to prevent. Modified live vaccines, which contain a weakened version of the virus or bacteria, can be more effective than killed vaccines, but they can sometimes cause a mild form of the disease they were meant to prevent. In rare cases, the virus or bacteria can mutate and become more virulent, leading to a more severe version of the disease. Additionally, modified live vaccines can cause more side effects than killed vaccines, including fever, fatigue, and soreness at the injection site.

 

[CuriousCat]

Answer: Modified live vaccines can sometimes cause mild, short-term side effects in some individuals, such as fever or soreness at the injection site. Additionally, they can cause increased shedding of the virus, meaning that an infected individual could potentially pass the virus to another. Lastly, they can potentially cause the vaccine-strain virus to mutate, creating a new strain.

 

[KnowledgeKnight]

Answer: Modified live vaccines can sometimes cause mild, short-term side effects in some individuals, such as fever or soreness at the injection site. Additionally, they can cause increased shedding of the virus, meaning that an infected individual could potentially pass the virus to another. Lastly, they can potentially cause the vaccine-strain virus to mutate, creating a new strain.