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Rats In New York City
Rats in New York City are widespread, as they are in many densely populated areas. They are considered a cultural symbol of the city. For a long time, the number of rats in New York City was unknown, and a common urban legend declared there were up to five times as many rats as people. However, a 2023 study estimates that there are approximately 3 million rats in New York, which is close to a third of New York's human population. The city's rat population is dominated by the brown rat (also known as the Norway rat). The average adult body weight is in males and about in females. The adult rat can squeeze through holes or gaps wide, jump a horizontal distance of up to (or vertically from a flat surface to ), survive a fall from a height of almost , and tread water for three days. New York City rats carry pathogens that can cause diarrhea, vomiting, and fever in humans – especially in children. The pathogens they carry include bacteria such as ''Clostridioides diffic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rat In NYC Subway 3 (cropped)
Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus ''Rattus''. Other rat genera include ''Neotoma'' (pack rats), ''Bandicota'' (bandicoot rats) and ''Dipodomys'' (kangaroo rats). Rats are typically distinguished from mouse, mice by their size. Usually the common name of a large muroid rodent will include the word "rat", while a smaller muroid's name will include "mouse". The common terms ''rat'' and ''mouse'' are not Taxonomy (biology), taxonomically specific. There are 56 known species of rats in the world. Species and description The best-known rat species are the black rat (''Rattus rattus'') and the brown rat (''Rattus norvegicus''). This group, generally known as the Old World rats or true rats, originated in Asia. Rats are bigger than most Old World mouse, mice, which are their relatives, but seldom weigh over in the wild. The term ''rat'' is also used in the names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cat Scratch Disease
Cat-scratch disease (CSD) is an infectious disease that most often results from a scratch or bite of a cat. Symptoms typically include a non-painful bump or blister at the site of injury and painful and swollen lymph nodes. People may feel tired, have a headache, or a fever. Symptoms typically begin within 3–14 days following infection. Cat-scratch disease is caused by the bacterium '' Bartonella henselae'' which is believed to be spread by the cat's saliva. Young cats pose a greater risk than older cats. Occasionally dog scratches or bites may be involved. Diagnosis is generally based on symptoms. Confirmation is possible by blood tests. The primary treatment is supportive. Antibiotics speed healing and are recommended in those with severe disease or immune problems. Recovery typically occurs within 4 months but can require a year. About 1 in 10,000 people are affected. It is more common in children. Signs and symptoms Cat-scratch disease commonly presents as tender, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bubonic Plague
Bubonic plague is one of three types of Plague (disease), plague caused by the Bacteria, bacterium ''Yersinia pestis''. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and vomiting, as well as Lymphadenopathy, swollen and painful lymph nodes occurring in the area closest to where the bacteria entered the skin. Acral necrosis, the dark discoloration of skin, is another symptom. Occasionally, swollen lymph nodes, known as "buboes", may break open. The three types of plague are the result of the route of infection: bubonic plague, septicemic plague, and pneumonic plague. Bubonic plague is mainly spread by infected fleas from small animals. It may also result from exposure to the body fluids from a dead plague-infected animal. Mammals such as rabbits, hares, and some cat species are susceptible to bubonic plague, and typically die upon contraction. In the bubonic form of plague, the bacteria enter through the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flea
Flea, the common name for the order (biology), order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by hematophagy, ingesting the blood of their hosts. Adult fleas grow to about long, are usually dark in color, and have bodies that are "flattened" sideways or narrow, enabling them to move through their hosts' fur or feathers. They lack wings; their hind legs are extremely well adapted for jumping. Their claws keep them from being dislodged, and their mouthparts are adapted for piercing skin and sucking blood. Some species can leap 50 times their body length, a feat second only to jumps made by another group of insects, the superfamily (taxonomy), superfamily of froghoppers. Flea larvae are worm-like, with no limbs; they have chewing mouthparts and feed on organic debris left on their hosts' skin. Genetic evidence indicates that fleas are a specialised lineage of parasitic scorpionflies (Mecopte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seoul Virus
Seoul virus (SEOV) is one of the main causes of hemorrhagic fever with renal syndrome (HFRS). Seoul virus is transmitted by the brown rat (''Rattus norvegicus'') and the black rat (''Rattus rattus''). In its natural reservoirs, SEOV causes an asymptomatic, persistent infection and is spread through excretions, fighting, and grooming. Humans can become infected by inhaling aerosols that contain rodent saliva, urine, or feces, as well as through bites and scratches. In humans, infection leads to HFRS, an illness characterized by general symptoms such as fever and headache, as well as the appearance of spots on the skin and renal symptoms such as kidney swelling, excess protein in urine, blood in urine, decreased urine production, and kidney failure. The case fatality rate from infection is 1–2%. The genome of SEOV is about 12 kilobases (kb) in length and segmented into three negative-sense, single-stranded RNA (-ssRNA) strands. The small strand encodes the viral nucleoprotein, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hepacivirus
''Hepacivirus'' is a genus of positive-strand RNA viruses in the family ''Flaviviridae''. The hepatitis C virus (HCV), in species ''Hepacivirus hominis'', infects humans and is associated with hepatitis and hepatocellular carcinoma. There are fourteen species in the genus which infect a range of other vertebrate. History Hepatitis C virus (HCV), which is the causative agent of hepatitis C in humans, and a member of the species ''Hepacivirus C'', was discovered in 1989. Eight genotypes (1–8) and eighty-six subtypes (1a, 1b etc.) of hepatitis C virus have been named. GBV-B virus (also known as GB virus B) discovered in 1995 is capable of infecting New World monkeys, in particular tamarins. Like HCV it is transmitted by the blood-borne route and similar to HCV it is associated with the viral hepatitis. However GBV-B has never been identified in wild animals and its natural host is not known. Structure Viruses in the genus ''Hepacivirus'' are enveloped and have spherical icosahe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotavirus
Rotaviruses are the most common cause of diarrhea, diarrhoeal disease among infants and young children. Nearly every child in the world is infected with a rotavirus at least once by the age of five. Immunity (medical), Immunity develops with each infection, so subsequent infections are less severe. Adults are rarely affected. The virus is transmitted by the fecal–oral route, faecal–oral route. It infects and damages the enterocyte, cells that line the small intestine and causes gastroenteritis (which is often called "stomach flu" despite having no relation to influenza). Although rotavirus was discovered in 1973 by Ruth Bishop and her colleagues by electron micrograph images and accounts for approximately one third of hospitalisations for severe diarrhoea in infants and children, its importance has historically been underestimated within the public health community, particularly in developing country, developing countries. In addition to its impact on human health, rotavi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parechovirus
''Parechovirus'' is a genus of viruses in the family ''Picornaviridae''. Humans, ferrets, and various rodents serve as natural hosts. The genus contains six species. Human parechoviruses may cause gastrointestinal or respiratory illness in infants, and they have been implicated in cases of myocarditis and encephalitis. Taxonomy Eighteen types of human parechovirus have been identified: human parechovirus 1 (HPeV1, formerly echovirus 22), human parechovirus 2 (formerly echovirus 23), and HPeV3 to HPeV18. A total of 15 genotypes are currently recognised.Chieochansin T, Vichiwattana P, Korkong S, Theamboonlers A, Poovorawan Y (2011) Molecular epidemiology, genome characterization, and recombination event of human parechovirus. Virology Species The genus contains the following species, listed by scientific name and followed by the common name of the species: * ''Parechovirus ahumpari'', Human parechovirus * ''Parechovirus beljungani'', Ljungan virus * ''Parechovirus cebokele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kobuvirus
''Kobuvirus'' is a genus of viruses in the order ''Picornavirales'', in the family ''Picornaviridae''. Humans and cattle serve as natural hosts. There are six species in this genus. Diseases associated with this genus include: gastroenteritis. The genus was named because of the virus particles' lumpy appearance by electron microscopy; "kobu" means "knob" in Japanese. Three species of the genus include ''Aichivirus A'' (formerly ''Aichi virus''), '' Aichivirus B'' (formerly ''Bovine kobuvirus'') and '' Aichivirus C'' (formerly ''Porcine kobuvirus'') each possessing a single serotype 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 Cell (biology), cells are classified together based on their shared reactivity .... Canine kobuvirus belong to species ''Aichivirus A''. Aichi virus infects humans, while bovine kobuvirus, porcine kobuvirus and canine kobuvirus, as su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiovirus
Cardiovirus are a group of viruses within order ''Picornavirales'', family ''Picornaviridae''. Vertebrates serve as natural hosts for these viruses. Taxonomy The genus contains the following species: * ''Cardiovirus dhusarah'' (Cardiovirus F) * ''Cardiovirus ranori'' (Cardiovirus C) * ''Cardiovirus rudhira'' (Cardiovirus E) * ''Cardiovirus rueckerti'' (Cardiovirus A), Encephalomyocarditis virus * ''Cardiovirus saffoldi'' (Cardiovirus D), Saffold virus * ''Cardiovirus theileri'' (Cardiovirus B), which contains Theiler's murine encephalomyelitis virus Structure Cardioviruses are single-stranded RNA, non-enveloped viruses with icosahedral or spherical geometries, and a T=pseudo3 icosahedral capsid protein geometry. The diameter is around 30 nm. Genomes are linear and non-segmented, around 7.8 kb in length. The T=pseudo3 icosahedral capsid of Cadiovirus is made of 60 protomers, each of which contains 4 polypeptides: VP1, VP2, VP3, and VP4. Inside the capsid of the virus th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sapovirus
Sapovirus is a genetically diverse genus of single-stranded Positive sense RNA, positive-sense RNA, non-enveloped viruses within the family ''Caliciviridae''. Together with norovirus, sapoviruses are the most common cause of acute gastroenteritis (commonly called the "stomach flu" although it is not related to influenza) in humans and animals. It is a monotypic taxon containing only one species: Sapporo virus (''Sapovirus sapporoense''). Natural hosts for the virus are humans and swine. The virus is transmitted through Fecal–oral route, oral/fecal contact. Sapovirus commonly occurs in children and infants and therefore is often spread in nurseries and daycares; however, it has also been found in long-term care facilities. This could be due to a lack of personal hygiene and sanitation measures. Common symptoms include diarrhea and vomiting. The sapovirus was initially discovered in an outbreak of gastroenteritis in an orphanage in Sapporo, Japan, in 1977. Transmission route a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feces
Feces (also known as faeces American and British English spelling differences#ae and oe, or fæces; : faex) are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relatively small amount of metabolic waste products such as bacterially-altered bilirubin and dead epithelial cells from the lining of the gut. Feces are discharged through the anus or cloaca during defecation. Feces can be used as fertilizer or soil conditioner in agriculture. They can also be burned as dry animal dung fuel, fuel or dried and used for wattle and daub, construction. Some medicinal uses have been found. In the case of human feces, fecal transplants or fecal bacteriotherapy are in use. Urine and feces together are called excretion, excreta. Characteristics The distinctive odor of feces is due to skatole, and thiols (sulfur-containing compounds), as well as amines and carboxylic acids. Sk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
