Medical Engineering encompasses a broad range of activities, and is alternatively called Bioengineering and Biomedical Engineering.
Just like humans, cats can develop allergies to things in the environment. Cat allergies can be caused by many different things, and the cause usually has to be figured out by a process of elimination. Sneezing that's caused by an allergy is often accompanied by scratching and other skin problems. These include frequent rubbing of the face and excessive grooming which may cause hair loss.
The other feline virus responsible for cat sneezing is the Calicivirus. Symptoms can be very similar, although the feline herpes virus is more likely to cause ulcers on the eye, while the calicivirus causes ulcers on the tongue. The Calicivirus also can cause a transient shifting leg arthritis.