Viruses
Viruses are dangerous organisms that are spread everywhere around us. It is surprising that such a finite organism can cause a lot of diseases. One of the strange characteristics of the virus is that it does not reproduce only within the body of living organisms, Or even the plant, and most infectious diseases caused by viruses, and these diseases range in seriousness, some of which can be cured, which may be very serious and lead to death, and we will know today some of the diseases caused by viruses in the bodies of organisms.
The virus attaches to the cell (called the host cell) through special receptors located on the cell and the virus, enters it and releases its DNA inside or inside its nucleus. The DNA of the virus is the genetic material that contains the information needed to clone itself. Host cells are forced to clone the virus, and usually the infected cell dies because the virus prevents it from performing its normal functions. When it dies, new viruses are released, which continue to infect other cells.
Diseases caused by viruses to humans
There are many diseases caused by viruses to humans, and the issue of hygiene is the most important things that protect against the arrival of these diseases to the human body, it is worth mentioning that some of these diseases may be cured, but some may be fatal, especially if not diagnosed and treated in time And diseases caused by viruses to humans:
- SARS: Severe Acute Respiratory Syndrome (SARS) is a serious form of pneumonia, caused by the virus first discovered in 2003, and is a member of the coronary family of viruses (the same family that can cause colds). SARS infection has caused constriction Acute breathing, severe difficulty and sometimes death.
- Avian Influenza: Avian Influenza is a type of influenza virus that rarely affects humans. More than a dozen species of the virus have been identified, including two recent human strains, H5N1 and H7N9. It can not cause symptoms and can be fatal.
- Swine Flu: The so-called H1N1 flu is a highly contagious respiratory disease caused by a new strain of influenza virus. Swine flu symptoms include fever (temperature above 38 ° C), cough, sore throat, headache, fatigue, Of the virus found in pigs in the beginning, and in 2009, a new strain of human virus was identified, and in spite of some deaths in some areas, but the vast majority of swine flu cases were moderate and can be compared with regular seasonal flu, They recover Without any medical treatment.
- Lymphococcal meningitis is caused by a lymphoid lymphoid virus (LCMV) belonging to the family of sand viruses (named because of its appearance in the electron microscope, which resembles sand grains), a disease that causes bipolar fever, which is eliminated alone, which often causes inflammation Inherited men and rodents, domestic mice, domestic mice, and white mice are carriers of the virus and transmitted to humans by inhaling air polluted by rodents’ waste, or by contaminated skin wounds.
- Coxsacki viruses: A group of enteric viruses and infection is very common, especially in hot areas and climates, tends to affect people under the age of ten but can also affect any age group, causing fever and rash.
- Human papillomavirus (HPV) viruses are a group of more than 150 related viruses. Each virus in this large group is given a number of its types, such as pimples and other cancers that can lead to cancer, especially cervical cancer. There are more than 40 types of viruses Which can infect the male and female genital areas, but there are vaccines that can prevent the infection of this group of viruses.
- Inflammation of the respiratory system due to the virus in children.
- Kawasaki warts disease.
- Hepatitis C in all three types.
- Inflammation of the stomach and intestines.
- Viral fever causes high temperatures.
Diseases caused by viruses for animals
Animals that have four legs are infected with viruses. These viruses may reach humans because of the dependence of humans in their food on pets. Therefore, it is important to maintain the health and cleanliness of the environment in which animals live.
- Feline Infections.
- Respiratory infections.
- Tinnitus and rheumatoid arthritis occurs in cattle and this virus is contagious.
- Plague affecting cows.
- Foot and mouth disease.
Diseases caused by viruses for plants
Viruses affect plants very much, as they may cause damage to food crops, and unfortunately there are no effective ways to protect plants from the risk of viruses, but can be cared for by keeping them clean and feeding constantly, most of these viruses infect the plant in the plant and spread widely, These diseases caused by viruses to plants:
- Virus mosaic tobacco.
- Virus Buds Plate.
- Mosaic cauliflower virus.
- Tomato virus.