List Of Human Diseases Caused By Virus, Bacteria, Protozoa And Worm
Types of Diseases: On the basis of its nature, character and causes of its sadness is of two types:
1. Congenital Disease is the diseases which are present since birth. These are caused due to genetic abnormality or due to metabolic disorders or malfunctioning of any organ. They are basically permanent, generally not easily curable, and may be inherited to the children like Harelip, Cleft Palate, Club foot, etc. Also due to imbalance in the chromosomes the appearance of Mongalism, to born the blue baby due to cardiac disorder, etc are also some examples of it.
2. Acquired Disease is those defects or disorders which are not present by birth but appear due to the various causes and factors. These may be further categorized into the following heads:
(i) Communicable or infectious diseases: These are caused by a variety of pathogenic viruses, bacteria, protozoa, fungi, and worms. The pathogens are generally carried with the help of a vector.
(ii) Non-communicable or non-infectious or degenerative diseases: These occur due to the malfunctioning of some organ or organ system in the body. It may be of various types like Deficiency diseases: These occur due to the deficiency of some nutrients, minerals or vitamins, Cancerous diseases, Allergy, Genetic diseases.
Diseases Spread through Blood Transfusion
AIDS (Acquired Immuno Deficiency Syndrome): It destroys the immune system of the body & is caused by the Human Immunodeficiency Virus (HIV). There are two types of HIV namely HIV-1 and HIV-
2. The most common virus currently associated with AIDS is HIV-1. A virus found in the blood of wild African green monkey called the Simian Immunodeficiency Virus (SIV) is similar to HIV-2. HIV is a retrovirus. It can synthesize DNA from RNA. The major cell infected by HIV is the helper T-Lymphocyte that bears the CD-4 receptor site. HIV progressively destroys T-Lymphocytes. The patient occasionally will suffer from swollen lymph nodes, mild prolonged fever, diarrhea, or other non-specific symptoms.
Disease caused by Viruses:
Cancer: They are characterized by the uncontrolled growth and division of cells which leads to a mass of cells known as a neoplasm. Abnormal and persistent cell division localized in a particular region is called a benign tumor.
Gout: It results from the accumulation of uric acid crystals in the synovial joints. It is a disease associated with an inborn error of uric acid metabolism that increases production or interferes with the excretion of uric acid.
Haemophilia is called bleeder's disease. It is a disorder that is sex-linked and is a recessive condition. In a patient of hemophilia, blood clotting is deficient.
Haemophilia A, is characterized by a lack of anti- hemophilia globulin factor VIII. About four-fifths of the cases of hemophilia are of this type.
Haemophilia B or Christmas disease results from a defect in the plasma thromboplastin component.
Hepatitis: It is a viral disease, causes hepatic anorexia resulting in liver damage (liver cancer) or jaundice. It is transmitted by the fecal-oral route. Children and young adults are susceptible to it and no vaccines are acceptable.