chronic obstructive pulmonary disease (COPD).serious heart conditions, such as heart failure, coronary artery disease, or cardiomyopathies.Older adults are most at risk of severe illness, as are people with the following chronic health conditions: Viruses can also spread more in certain areas, such as highly populated cities. The risk is higher for anyone in close contact with people who have COVID-19, such as healthcare workers. However, this is changing as the virus spreads - particularly in Europe and the United States. The WHO state that the risk of developing COVID-19 is still low for most people. The risk of coming into contact with the virus depends on how far it has spread in a person’s local area. Some factors can affect the risk of coming into contact with the virus, while other factors can affect the risk of developing severe illness. However, COVID-19 is more contagious, and it is already the cause of more deaths worldwide. It became a global pandemic in 2002–2003. When testing becomes easier and more widespread, health experts will have a more accurate insight into the exact number of severe cases and deaths. For example, seasonal influenza typically leads to death in less than 0.1% of cases. However, they suggest that COVID-19 is more deadly than influenza. These figures are likely to change as the situation evolves. Another report estimates that about 3.6% of the confirmed cases in China led to death. One report suggests that out of 1,099 people with confirmed cases in China, around 16% became severe. This makes it difficult to estimate how often the disease becomes severe or the exact rate of mortality. The outbreak of COVID-19 has been sudden. However, it can cause symptoms that become severe, leading to death in some cases. There may also be other ways that the new coronavirus can spread. It is important to note that COVID-19 is new, and research is still ongoing. Infection is likely if the person then touches their nose, eyes, or mouth. Other people can pick up the virus by touching these surfaces or objects. A new study suggests that 10% of infections are from people exhibiting no symptoms.ĭroplets containing the virus can also land on nearby surfaces or objects. However it is possible for someone without symptoms to spread the virus. The disease is most contagious when a person’s symptoms are at their peak. The most common way that this illness spreads is through close contact with someone who has the infection. These droplets can enter the mouth or nose of someone without the virus, causing an infection to occur. When people with COVID-19 breathe out or cough, they expel tiny droplets that contain the virus. SARS-CoV-2 spreads from person to person through close communities. Note: It is critical that surgical masks and N95 respirators are reserved for healthcare workers. Instructions for making masks at home are available here. People should wear cloth face masks while continuing to practice physical distancing. This will help slow the spread of the virus from people who do not know that they have contracted it, including those who are asymptomatic. The CDC recommend that people wear cloth face masks in public places where it is difficult to maintain physical distancing. It may have been from here that SARS-CoV-2 started to spread to humans. Some reports trace the earliest cases back to a seafood and animal market in Wuhan. However, it remains unclear exactly how the virus first spread to humans. Although the transmission of coronaviruses from animals to humans is rare, this new strain likely came from bats, though one study suggests pangolins may be the origin. Reports of the first COVID-19 cases started in December 2019.Ĭoronaviruses are common in certain species of animals, such as cattle and camels. The recent outbreak began in Wuhan, a city in the Hubei province of China. Share on Pinterest Avoiding close contact with people may help stop the spread of SARS-CoV-2.
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