essay on coronavirus 260 words
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Answer:
The COVID-19 pandemic, also called the coronavirus pandemic, is a current pandemic of coronavirus disease 2019 (COVID-19). It is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).[1][6][b] The outbreak started in Wuhan, Hubei, China, in December 2019. The World Health Organization (WHO) called it a pandemic on 11 March 2020.[7][8][9][10][11] The International Committee on Taxonomy of Viruses gave the virus its name. As of February 19, 2021, more than 110 million cases of COVID-19 have been reported in more than 188 countries and territories. More than two million people have died of COVID-19,[12] and more than 85 million people have defeated, or recovered from the disease.[12][The virus usually moves from one person to another with small drops made when coughing[15][16] or sneezing.[17] It mostly spreads when people are close to each other, which is why social distancing is encouraged. Coronavirus can also spread when people touch a surface with the virus, and then they touch their face.[16][17] Common symptoms include fever, cough, and trouble breathing.[18] The illness can worsen with pneumonia and acute respiratory distress syndrome.[19] As of January 2021, a number of vaccines for COVID-19 have been developed, but only a few have been approved as safe for use. The first vaccine to be approved was created by Pfizer and BioNTech,[20] followed by the Oxford / AstraZeneca [21] vaccine. Vaccine distribution has begun in many countries in Europe, North America, South America and Asia.[22] The United Kingdom was the first western country to administer a COVID-19 vaccine.[23] No antiviral medicine for COVID-19 is available.[24] Doctors usually give patients supportive therapy instead.[25] People can avoid spreading the virus by regularly washing their hands, covering their mouth when coughing, maintaining distance from other people, staying away from crowds, wearing medical or cloth face coverings, and being alone for people who think they are infected, also known as quarantining.[24]
The outbreak might be from a coronavirus that usually lives in bats. This infected another animal, possibly a pangolin. It then changed inside that other animal until it could infect humans.[26] It originated at a wet market Huanan Seafood Wholesale Market and is linked to China’s wild animal meat trade. Live foxes, crocodiles, wolf pups, giant salamanders, snakes, rats, peacocks, porcupines, koalas and game meats were on the menu at the market.[27] A 55-year-old person from Hubei province was the first human to contract the virus on November 17, 2019.[28] A 61-year-old man who was a regular customer at the market was the first person to die from the virus on January 11, 2020.[29] The exact origin of the virus is still unknown since the market in Wuhan sold a variety of live wild animals in cages. Chinese tourists have spread the virus by traveling to other countries and made it a worldwide pandemic.[30]
Racism and xenophobia against Chinese people and Asians increased during the pandemic.
In November 2020, two companies, Pfizer and Moderna, said they had finished making COVID-19 vaccines. Both are over 90% effective. Two mRNA vaccines, one by Pfizer and one by Moderna, have been tested. Both were over 90% effective.[31] Countries began planning to give the vaccine to many people.[32][33][34]
The United States had the most deaths from the virus. More than 600,000 Americans died from the virus.[35] California had the most COVID-19 cases in the country.[36] Los Angeles was the most infected city.
Answer:
Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, they cause respiratory tract infections that can range from mild to lethal. Mild illnesses in humans include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses), while more lethal varieties can cause SARS, MERS, and COVID-19. In cows and pigs they cause diarrhea, while in mice they cause hepatitis and encephalomyelitis.