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About COVID-19

COVID-19 (coronavirus disease 2019) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), previously known as the 2019 novel coronavirus (2019-nCoV), a strain of coronavirus.

The first cases were seen in Wuhan, China, in late December 2019 before spreading globally.

The current outbreak was officially recognized as a pandemic by the World Health Organization (WHO) on 11 March 2020. Terminology The World Health Organization originally called this illness "novel coronavirus-infected pneumonia (NCIP)", and the virus itself had been provisionally named "2019 novel coronavirus (2019-nCoV)".

On 11 February 2020, the WHO officially renamed the clinical condition COVID-19 (a shortening of COronaVIrus Disease-19).

Coincidentally, on the same day, the Coronavirus Study Group of the International Committee on Taxonomy of Viruses renamed the virus "severe acute respiratory syndrome coronavirus" (SARS-CoV-2).

The names of both the disease and the virus should be fully capitalized, except for the 'o' in the viral name, which is in lowercase.


As of 31 May 2020, the number of cases of confirmed COVID-19 globally is over 6 million affecting virtually every territory, other than isolated South Pacific island states and Antarctica, according to an online virus tracker created by the medical journal, The Lancet, and hosted by Johns Hopkins University. As of June 2020, the United States had more than 1.5 million cases, with more than ten other countries with >100,000 cases.


Children seem to be relatively unaffected by this virus, or indeed other closely-related coronaviruses with large cohort studies reporting that 1-2% of COVID-19 patients are children. However, there have been cases of critically-ill children with infants under 12 months likely to be more seriously affected. A very low number of pediatric deaths has been reported. In children, male gender does not seem to be a risk factor. The incubation period has been reported to be shorter than in adults, at about two days.



fever (85-90%)

cough (65-70%)

disturbed taste and smell (40-50%)

fatigue (35-40%)

sputum production (30-35%)

shortness of breath (15-20%)


Less common

myalgia/arthralgia (10-15%)

headaches (10-36%)

sore throat (10-15%)

chills (10-12%)

pleuritic pain



nausea, vomiting, nasal congestion (<10%), diarrhea (<5%) 

palpitations, chest tightness

hemoptysis (<5%)

seizures, paraesthesia, altered consciousness.

Jun 04, 2020 by Mohd Ali Saifi