Human race has been affected with parasite infections since the time immemorial. The mouth is the entry port for many parasites. Parasitic infections are commonly seen in tropics. It is commonly seen among people with poor living conditions and where personal hygiene is commonly ignored. To treat the infection, early diagnosis of the specific parasite is important. Early treatment must be delivered at the right time as many may develop into serious diseases.

Nanotechnology - Application In Oral Cancer-Nanotechnology provides innovative tools for the diagnosis of oral cancer. They aid in analysing the parameters such as cellular mechanics, morphology and cytoskeleton which is difficult to achieve using the conventional technology. Nanotechnology has the potential tool to detect cancer cells, diagnose and deliver specific targeted anti-cancer therapeutic drugs. Recent advances in the field of nanotechnology have provided a great hope for the patients affected by oral cancer. In the future nanomedicine will change the dentistry, healthcare and human life more effectively than any other inventions.

Harmful viruses attack the cells of human body and multiply in them. Many of them cause contagious diseases. In bio-terrorism, viruses can be used for mass destruction purposes. Hence threat of any viral bio-attack has become a national security as well as public health issue at present. To detect and respond to any viral bio-attack, strong defense systems with sensitive environmental monitoring devices as well as good laboratory facilities are mandatory