If you have something like an endoscope except controlled remotely doctors and healthcare workers could in essence use it as a sort of reconnoissance tool for diagnosing injuries and illnesses.
Because the camera can fit inside the body causing for doctors, nurses, healthcare workers, etc. find out the problem or go in for a check up! hope this helped love ;)
A vaccine is used to provide active acquired immunity to the host by supplying them with a biological preparation which is often made up of attenuated organism, its associated immunogenic particle, protein, DNA, etc.
Today there are vaccines available for a wide variety of diseases however there is no preventive vaccine for listeriosis.
Listeriosis is a disease caused by <em>Listeria monocytogenes</em> and it is a very serious disease often caused due to the consumption of contaminated food.
There is unavailability of a commercially available vaccine against listeriosis although a lot of research is underway to prepare a vaccine to reduce the mortality rate.
