October 25, 2021
The covid-19 viral disease pandemic is a persistent pandemic of the covidavirus coronavirus disease caused by the severe acute respiratory syndrome of the coronavirus SARS-CoV-2. The virus was first identified in December 2019 in Wuhan, China. The World Health Organization declared an outbreak of a global health emergency in January 2020 and a pandemic in March 2020. By 23 October 2021, a total of 243,657,129 cases had been confirmed in 195 countries, including 4,947,967 deaths attributed to covid-19. On the same day, 6,742,578,222 doses of vaccination were used. The 2 million registered death toll was reached just one year after the first cases in Wuhan, and experts say the real number will be even higher because many deaths have not been officially recorded. Estimates speak of about 16 million victims as of October 2021. The symptoms of covid-19 are very diverse, from an asymptomatic condition to a serious illness. The virus spreads mainly by air when people are close to each other. He leaves an infected person when he is breathing, coughing, sneezing or talking, and enters another person's mouth, nose or eyes. It can also spread through contaminated surfaces. People remain contagious for up to two weeks and can spread the virus even if they show no symptoms. Recommended preventive measures include socializing, wearing veils in public, ventilating and air filtration, washing hands, covering mouths when sneezing or coughing, disinfecting surfaces and monitoring and isolation of persons who have met someone infected or symptomatic. Several vaccines are being developed to vaccinate. Current treatment focuses on treating symptoms, while work is underway to develop therapeutic drugs that prevent the spread of the virus. Authorities around the world have responded by imposing travel restrictions, locking residents, workplace inspections and closing businesses. Work has also been done in many places to increase testing capacity and to monitor the contacts of infected people. The response to the pandemic has resulted in global social and economic disruption, including the largest global recession since the Great Depression. This has led to the postponement or cancellation of a number of events, widespread supply shortages exacerbated by panic buying, disruption to agriculture and food shortages, and reduced emissions of pollutants and greenhouse gases. Many educational institutions have been partially or completely closed. Disinformation circulated through social media and the media. There have been cases of xenophobia and discrimination against Chinese and Chinese-looking people or people from areas with high rates of infection. Due to this variant, for example, the capacity of children's intensive care units (ICUs) was overloaded in many hospitals in the USA, which could no longer accept more children at risk, eg in Dallas no children's ICU was available in August 2021, similarly to many weeks in New Orleans. In the Czech Republic, this variant accounted for 99% of cases as of 6 September 2021.