Types of corona virus Corona virus (OCV) :
Types of Corona virus (OCV) : is a single-stranded, negative-sense RNA virus. It is a single-stranded RNA virus that is the second most common zoonotic agent in the world. It causes encephalitis (swelling of the brain) and neurocysticercosis (inflammation of the brain).
Corona virus is known for its ability to infect and replicate in many, but not all, species of amphibians, reptiles, birds and mammals. Most coronaviruses are serotypes of OCV-A and OCV-B. History Corona virus is not new. It has been isolated from a wide variety of wildlife species since at least 1888. A review of genetic sequences suggests OCV may have originated in Asia in amphibians some 30,000 years ago.
The new OCV genome seems to be derived from the ancient pathogen, Lentivirus B19, which causes cholera in rats, causing infection by OCV in cattle, sheep and pigs. The first humans to be infected were the inhabitants of the Middle East. The only known human infections are from India and Sinai in Egypt.
Possible infections include a young boy in eastern Texas, a veterinarian in Florida, and a housekeeper in North Carolina. The patients showed a typical clinical course with fever, malaise, headache, vomiting, and severe neurologic symptoms. All three cases were treated with acyclovir and cured without evidence of permanent neurologic dysfunction. Five cases of neurocysticercosis in a Texas ranch and surrounding area have been reported. After one two-year-old fell ill, the symptoms resolved after a few days. It was subsequently confirmed to be OCV encephalitis. The second case involved a 2-year-old child who died and then an 8-year-old who survived with a period of convulsions lasting 10 days and a small lesion behind the eye.
A third case was diagnosed in a 14-year-old girl who also survived for two months. A fourth case was a 65-year-old man with a history of mareism and cholangitis. He was diagnosed with suspected OCV encephalitis after two weeks of severe diarrhea and lethargy, but recovered with antiviral therapy. Finally, a fifth case involved a 50-year-old woman with no medical history and initially confined to bed with fever and respiratory symptoms. She recovered with antiviral therapy, but three weeks later her condition deteriorated, and she died 2 months later. The patient had been living with a backyard farm where pigs, chickens, and quail were kept. No cases of encephalitis have been reported in the United States.
Most cases of ( What are the types of Corona Virus ) OCV encephalitis in North America are imported from Latin America and Mexico. However, in May 2008, a 44-year-old man from Portland, Oregon became the first case in the western hemisphere and the second in the U.S. diagnosed with the disease. The patient was hospitalized with a 2-week course of anti-venom and was discharged 3 weeks later.
He then developed an increase in his appetite, fever, and shakiness and was hospitalized again. After five days, he began to eat more, became more stable and alert and his fever decreased. After another 4 days, he was well enough to be discharged. There was no evidence of any neurological involvement.