EPKP O111: K58 is isolated from the feces of a sick child under 3 months of age with certain clinical manifestations in the bacteriological laboratory. 1. What diagnosis can be given to a child? 2.What method of microbiological diagnosis was used in this case? Describe its main stages. 3. Is it possible to use serodiagnosis to verification of coli-enteritis? What material is taken from the patient for this purpose and what is used: glass-agglutination test, direct agglutination test or IHAT?

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.