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Virus classification. Virus classification is the process of naming viruses and placing them into a taxonomic system similar to the classification systems used for cellular organisms. Viruses are classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause.
Lumbar puncture (contraindicated if there is a mass in the brain or the intracranial pressure is elevated), CT or MRI. Antibiotics. No. multiple bacteria. Bacterial pneumonia. Sputum Gram stain and culture, Chest radiography. Antibiotics. No. List of bacterial vaginosis microbiota.
Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, [10] making smallpox the only human disease to have been eradicated to date.
Plague (disease) Yersinia pestis seen at 200× magnification with a fluorescent label. Plague is an infectious disease caused by the bacterium Yersinia pestis. [2] Symptoms include fever, weakness and headache. [1] Usually this begins one to seven days after exposure. [2] There are three forms of plague, each affecting a different part of the ...
Pandoravirus yedoma [4] Pandoravirus is a proposed genus of giant virus, first discovered in 2013. [5] It is the third largest in physical size of any known viral genus, behind Pithovirus and Megaklothovirus. [6] Pandoraviruses have double stranded DNA genomes, with the largest genome size (2.5 million base pairs) of any known viral genus.
A serotype or serovar is a distinct variation within a species of bacteria or virus or among immune cells of different individuals. These microorganisms, viruses, or cells are classified together based on their surface antigens, allowing the epidemiologic classification of organisms to a level below the species.
Viruses are by far the most abundant biological entities on Earth and they outnumber all the others put together. [ 89 ] They infect all types of cellular life including animals, plants, bacteria and fungi. [ 6 ]: 49 Different types of viruses can infect only a limited range of hosts and many are species-specific.
Synthetic virology. Synthetic virology is a branch of virology engaged in the study and engineering of synthetic man-made viruses. It is a multidisciplinary research field at the intersection of virology, synthetic biology, computational biology, and DNA nanotechnology, from which it borrows and integrates its concepts and methodologies.