Answer:
Bird-flu is a contagious pandemic. The scientists are developing vaccines to prevent the outbreak of the disease. There are several problems scientists are facing, which are:
- The result of testing a vaccine can be time-taking.
- The vaccines can be turned dangerous to organisms.
- The adaptations of certain species can have no effect of vaccines.
Explanation:
Scientists are developing new vaccines to prevent the spread of diseases. For example, bird flu is a contagious disease, which can be turned into a pandemic if not treated. Scientists are developing vaccines to cure and prevent the outbreak. Bird flu spreads through humans, therefore, scientists are still working to prevent the disease. The challenges faced by the scientist are:
- The production of vaccines is limited, and thus, to test or practice a vaccine requires large doses and time.
- Mutation in viruses can occur during the replication of genetic material. These genetic mutations are used to change the surface proteins of the virus so that the immune system can fight them off easily.
- The testing and experimenting with a vaccine can be dangerous, which can lead to adverse effects on an organism.
Thus, there are several challenges faced by scientists to produce a vaccine. Some of the challenges include the availability of vaccines, time is taken for the production, and experimenting on organisms.
For Further Reference:
https://brainly.com/question/14329354?referrer=searchResults
