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Aug 21, 2018 · Common examples of contagious viral diseases include the flu, the common cold, HIV, and herpes. Other types of viral diseases spread through other means, such as the bite of an infected insect.
The virus which infects bacterial cells is known as bacteriophage. There are many varieties of bacteriophages, such as DNA virus, MV-11, RNA virus, λ page, etc. Explore more: Bacteriophage. Insect virus. The virus which infects insects is known as Insect virus, also called the viral pathogen of insects.
Oct 19, 2023 · A virus that is outside of a host cell is known as a virion. Not only are viruses microscopic, they are smaller than many other microbes, such as bacteria. Most viruses are only 20–400 nanometers in diameter, whereas human egg cells, for example, are about 120 micrometers in diameter, and the E. coli bacteria has a diameter of around 1 ...
Apr 21, 2023 · Significant changes could make a virus more transmissible, as has been the case with the B.1.1.7 variant of SARS-CoV-2. They may also help the virus evade the immune system or existing treatments ...
Viral diseases are mainly caused when a virus enters the human body and uses the host machinery to reproduce. If the body’s immune system fails to fight against viruses, it multiplies and spreads to other cells causing infections. Symptoms of Viral Diseases. Following are the important symptoms of viral diseases:
May 10, 2024 · A computer virus is a type of malicious software program ("malware") that, when executed, replicates itself by modifying other computer programs and inserting its code. When this replication succeeds, the affected areas are then said to be "infected". Viruses can spread to other computers and files when the software or documents they are attached to are transferred from one computer to another using a network, a disk, file-sharing methods, or through infected email attachments.
Feb 18, 2022 · Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.
