Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute metastasis syndrome coronavirus 2 (SARS-CoV-2). COVID-19 was initially known in December of 2019 in the urban centre, the capital of China’s Hubei province, and has since unfolded globally, leading to the continued 2019–20 coronavirus pandemic. Common symptoms embody fever, cough, and shortness of breath. different symptoms could embody fatigue, muscle pain, diarrhea, inflammatory disease, loss of smell, and abdominal pain. The time from exposure to onset of symptoms is often around 5 days, however, could vary from 2 to 14 days. whereas the bulk of cases lead to delicate symptoms, some reach viral infection and multi-organ failure. As of fourteen April calendar month of 2020, quite 1.93 million cases are rumored across 210 countries and territories, leading to over a hundred and twenty-one thousand deaths. quite 464,000 individuals have recovered.
The virus is primarily unfolded between individuals throughout shut contact, typically via tiny droplets made by coughing, sneezing, or talking. whereas these droplets are projected into the air upon exhalation, they sometimes fall to the bottom or onto surfaces instead of being infectious over long distances. individuals may additionally become infected by touching a contaminated surface so their faces. The virus will survive on surfaces for up to seventy-two hours. it’s most contagious throughout the primary 3 days when the onset of symptoms, though unfold is also doable before symptoms seem and in later stages of the Coronavirus disease 2019 (COVID-19).
The standard technique of diagnosing is by the period of time reverse transcription enzyme chain reaction (rRT-PCR) from a cavity swab. Chest CT imaging may additionally be useful for diagnosing in people wherever there’s a high suspicion of infection supported symptoms and risk factors, but it’s not suggested for routine screening.
Recommended measures to stop infection embody frequent hand laundry, maintaining physical distance from others (especially from those with symptoms), covering coughs and sneezes with a tissue or inner elbow, and keeping unwashed hands removed from the face. the employment of masks is suggested for people who suspect they need the virus and their caregivers. Recommendations for mask use by the final public vary, with some authorities recommending against their use, some recommending their use, et al. requiring their use. Currently, there’s no vaccine or specific antiviral treatment for COVID-19. Management involves the treatment of symptoms, substantiating care, isolation, and experimental measures.
The World Health Organization (WHO) declared the 2019–20 coronavirus outbreaks a Public Health Emergency of International Concern (PHEIC) on thirty Jan 2020 and an epidemic on eleven March 2020. Native transmission of the COVID-19 has been recorded in several countries across all six WHO regions.