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Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever, [7] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.
Hypothermia is defined as a body core temperature below 35.0 °C (95.0 °F) in humans. [2] Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion.
A COVID-19 vaccine is intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 . Prior to the COVID-19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...
The COVID-19 pandemic ranks as the deadliest disaster in the country's history. [43] It was the third-leading cause of death in the U.S. in 2020, behind heart disease and cancer. [44] From 2019 to 2020, U.S. life expectancy dropped by three years for Hispanic and Latino Americans, 2.9 years for African Americans, and 1.2 years for White ...
The CDC would later have to conclude after months of further experience involving more than 700,000 screenings that temperature and symptom-based entry screening was ineffective likely due to multiple factors including an overall low COVID-19 prevalence in travelers, the relatively long incubation period, illness presentation with a wide range ...
In a small study of 26 decedents, [better source needed] the pandemized COVID-19 and infection-related disease were "major contributors" to patients' death. [12] Such deaths are sometimes evaluated via excess deaths per capita – the COVID-19 pandemic deaths between January 1, 2020, and December 31, 2021, are estimated to be ~18.2 million ...
The COVID-19 pandemic in Italy is part of the ongoing pandemic of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The virus was first confirmed to have spread to Italy on 31 January 2020, when two Chinese tourists in Rome tested positive for the virus. [ 1 ]
On January 30, 2020, the COVID-19 pandemic is deemed a Public Health Emergency of International Concern by the World Health Organization (WHO). The public and healthcare professionals experience higher levels of anxiety as a result of increased worldwide knowledge. The WHO formally designates COVID-19 a pandemic on March 11, 2020.