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How is the COVID-19 spread?

The coronavirus is spread through droplets and virus particles released into the air when an infected person breathes, talks, laughs, sings, coughs or sneezes. Tiny infectious particles can linger in the air and accumulate in indoor places, especially where many people are gathered and there is poor ventilation.

FAQ Frequently asked questions

What is coronavirus disease (COVID-19)?

COVID-19 is an infectious disease that has caused a global pandemic for more than two years. The disease is transmitted from person-to-person.

What are signs and symptoms of the COVID-19?

Most people with COVID-19 have mild or moderate symptoms, such as fever or chills, cough, tiredness, loss of taste or smell, congestion or runny nose, sore throat. People might also have uncommon signs such as headache, muscle pain, diarrhea, …

What caused COVID-19?

The novel coronavirus is the cause of COVID-19. It was identified in Wuhan City in China in December 2019. The novel coronavirus changes over time (mutations. Currently the circulating variants of concern are Delta and Omicron.

How to get COVID-19?

People might be infected through direct close contact with a person while they are infectious. The infected person might or might not have symptoms. The coronavirus is spread through droplets and virus particles released into the air when an infected person breathes, …

How is the COVID-19 diagnosed?

The diagnostic test of confirming the COVID-19 is a laboratory test, called nucleic acid amplification testing, NAAT), people also simply call it ‘PCR test’. The rapid antigen test (RAT) is a quick screening and an alternative method and can be managed by …

How is the COVID-19 treated?

There is no specific treatment for coronaviruses. For patients with mild symptoms treat COVID-19 in a similar way to treating a seasonal flu. Patients with severe symptoms may need to be treated in hospital or require a ventilator. New antiviral agents have …

How long does the COVID-19 infection last?

Symptoms show up in people within 2 to 14 days of exposure (incubation period). Mostly within 5-7days. A person infected with the coronavirus is contagious to others for up to two days before symptoms appear, and they remain contagious to others …

How to prevent the COVID-19?

It includes public and individual strategies. Vaccination is one of the effective and safe ways to prevent COVID-19, especially to reduce severity of the disease, hospitalisation and death. So, get vaccinated. All ‘classic’ methods (wearing masks, social …

Will warm weather stop the outbreak of COVID-19?

It is not yet known if weather and temperature impact the spread of COVID-19. Some other viruses, like the common cold and flu, spread more during cold weather months but that does not mean it is impossible to become sick with these viruses …

Related topics

The common cold

The flu (influenza)

Traveler's diarrhea

About this article

Author: Dr Idan Ben-Barak PhD, MSc, BSc (Med)
First answered: 28 Oct 2014
Last reviewed: 28 Mar 2022
Rating: 4.2 out of 5
Votes: 281 (Click smiley face below to rate)
Category: SARS