Viruses are small particles of genetic material that are surrounded by a protein coat. Some viruses also have a fatty "envelope" covering. They cannot reproducing on their own. Viruses depend on the host organisms they infect for their survival. Viruses get a bad rap, and they also perform many important functions for humans, plants, animals, and the environment.
Bacteria are microscopic single-celled organisms that live almost everywhere. Bacteria live in every climate and location on earth. Some are airborne while others live in water or soil. Bacteria live on and inside plants, animals, and people. The word "bacteria" has a negative connotation, but bacteria actually perform many vital functions for organisms and in the environment.
Fungal Infectious diseases are often caused by fungi that are common in the environment. Most fungi are not dangerous, but some types can be harmful to health. Mild fungal skin diseases can look like a rash and are very common. Fungal diseases in the lungs are often similar to other illnesses such as the flu or tuberculosis. Some fungal infections like fungal meningitis and bloodstream infections are less common than skin and lung infections but can be deadly.
Emerging diseases are infections that have recently appeared within a population or those whose incidence or geographic range is rapidly increasing or threatens to increase in the near future. Emerging infections can be caused by 1: Undetected or unknown infectious agents 2: Known agents that have spread to new geographic locations or new populations 3: Previously known agents had a specific diseases has previously gone unrecognized. 4: Re-emergence of agents whose incidence of disease had significantly declined in the past, but whose incidence of disease has reappeared. This type of diseases is known as re-emerging infectious diseases.
Respiratory tract infection refers to a number of infectious diseases involving the respiratory tract. An infection of this type is normally further classified as an Upper respiratory tract infection (URI or URTI) or a lower respiratory tract infection (LRI or LRTI). Lower respiratory infections, such as pneumonia, can cause more serious conditions than upper respiratory infections, such as the common cold.
Tropical diseases encompass all diseases that occur solely in the tropics. In practice, the term is often taken to refer to infectious diseases that thrive in hot, humid conditions, such as malaria, leishmaniasis, schistosomiasis, onchocerciasis, lymphatic filariasis, Chagas disease, African trypanosomiasis, and dengue.
The infectious disease epidemiology encompasses domestic and global work on the epidemiology of emerging and re-emerging infections, global infectious disease threats, disease surveillance, disease detection, development of vaccines and other prevention methods, clinical trials, and the role of infectious pathogens in the pathogenesis of chronic non-communicable diseases such as cancer and cardiovascular disease. The broad range to search the novel pathogens using advanced molecular techniques to longitudinal population based studies to define transmission dynamics and spectrum of disease and survival. Approaches are employed in an interdisciplinary fashion to define etiology, pathogenesis, transmission, and prevention/treatment potential.
Dermatology is the branch deals with the hair, nails and skin illness. Human skin goes about as an organic shield against professional oxidative synthetic and physical air toxins; the delayed presentation to large amounts of these contaminations may have significant negative impacts on the skin. Exposing the skin to air poisons has been connected with skin maturing and provocative or unfavourably susceptible skin conditions, for example, atopic dermatitis, dermatitis, psoriasis or skin break out, while skin growth is among the most genuine impacts. Air toxins in the environment can be hurtful to wellbeing, not everybody understands that indoor poisons can bring about extreme issue and different genuine medical problems also.