essay on covid 19 for class 4 in english
Answers
Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). A novel coronavirus (nCoV) is a new strain that has not been previously identified in humans.
Coronaviruses are zoonotic, meaning they are transmitted between animals and people. Detailed investigations found that SARS-CoV was transmitted from civet cats to humans and MERS-CoV from dromedary camels to humans. Several known coronaviruses are circulating in animals that have not yet infected humans.
Common signs of infection include respiratory symptoms, fever, cough, shortness of breath and breathing difficulties. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome, kidney failure and even death.
Standard recommendations to prevent infection spread include regular hand washing, covering mouth and nose when coughing and sneezing, thoroughly cooking meat and eggs. Avoid close contact with anyone showing symptoms of respiratory illness such as coughing and sneezing.
Answer:
Covid 19
Covid 19 or the corona virus pandemic was first found in December 2019 in Wuhan, Hubei, China, and has resulted in an ongoing pandemic. On 5 October, the WHO said that one in ten people around the world (around 800 million) may have been infected with COVID–19.[10] As of 8 October 2020, 36.2 million cases have been reported across 188 countries and territories with more than 1.05 million deaths; more than 25.2 million people have recovered.
Common symptoms include fever, cough, fatigue, shortness of breath or breathing difficulties, and loss of smell and taste.[6] While most people have mild symptoms, some people develop acute respiratory distress syndrome (ARDS) possibly precipitated by cytokine storm,[11] multi-organ failure, septic shock, and blood clots. The incubation period may range from one to fourteen days.[12]
The disease spreads most often when people are physically close.[a] It spreads very easily and sustainably through the air, primarily via small droplets and sometimes in aerosols, as an infected person breathes, coughs, sneezes, talks, or sings.[14][15] It may also be transmitted via contaminated surfaces, although this has not been conclusively demonstrated.[15][16][17] It can spread for up to two days prior to symptom onset and from people who are asymptomatic.[15] People remain infectious for seven to twelve days in moderate cases and up to two weeks in severe cases.[15][12] The standard method of diagnosis is by real-time reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab. Chest CT imaging may also be helpful for diagnosis in individuals where there is a high suspicion of infection based on symptoms and risk factors, however guidelines do not recommend using it for routine screening.
Recommended measures to prevent infection include frequent hand washing, social distancing, quarantine, covering coughs and sneezes, and keeping unwashed hands away from the face.[7] The use of face masks or cloth face coverings such as a scarf or a bandana has been recommended by health officials in public settings to minimise the risk of transmissions, with some authorities requiring their use in certain settings, such as on public transport and in shops. Health officials also stated that medical-grade face masks, such as N95 masks, should be used only by healthcare workers, first responders, and those who directly care for infected individuals.
There are no proven vaccines or specific treatments for COVID-19 yet, though several are in development.
Covid 19 has given a huge lift to Online learning