Viruss
Viruss is not a standard scientific term in biology; the correct form is virus (plural viruses). In scientific usage, a virus is a small infectious agent that can replicate only inside living cells. Viruses are composed of genetic material, either DNA or RNA, surrounded by a protein coat called a capsid, and in many cases a lipid envelope derived from host membranes.
Virus genomes vary in type and size. They may carry double-stranded or single-stranded DNA, or single-stranded
Viruses do not carry out metabolic processes on their own and rely on host cells to reproduce.
Viruses infect a wide range of hosts, including bacteria (bacteriophages), plants, and animals. Transmission routes vary
Detection and prevention rely on laboratory methods such as PCR, genome sequencing, and serology to identify