Immunology and Virology Diseases

Transmission of Viruses

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Viruses are intracellular parasites and have to find a new host before the original host mounts an effective immune response or dies. However virus infectivity is intrinsically unstable and transmission has to be achieved usually within a few hours. All successful viruses have solved the transmission problem. Transmission viruses are three types

·         Horizontal transmission

·         Vertical transmission

·         Zoonoses

Transmission of Respiratory Viruses

Many virus infections are contracted to respiratory tract. Measles, chicken pox, & Smallpox are comes under general infections.