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Someone who is actively sick with COVID-19 can spread the illness to others. Someone who has been released from isolation is not considered posing a risk of infection to others.

Someone who has been released from quarantine is not considered a risk for spreading, according to the CDC.

asymptomatic transmission may occur and has contributed to a limited amount of transmission of COVID-19 infections. People can shed the virus before they have symptoms, but this is generally less than individuals with symptoms.

Just how easily the virus can spread is not yet clear. But a recent study that focused on the first 425 cases in China suggested that the virus has a basic reproductive value of 2.2, meaning that each case-patient could spread the virus to about two other people.

You generally need to be in close contact with a sick person to get infected. Close contact includes:Living in the same household as a sick person with COVID-19,Caring for a sick person with COVID-19,Being within 6 feet of a sick person with COVID-19 for about 10 minutes

See full answer asymptomatic laboratory-confirmed case is a person infected with COVID-19 who does not develop symptoms. Asymptomatic transmission refers to transmission of the virus from a person, who does not develop symptoms. There are few reports of laboratory-confirmed cases who are truly asymptomatic, and to date, there has been no documented asymptomatic transmission. This does not exclude the possibility that it may occur. Asymptomatic cases have been reported as part of contact tracing efforts in some countries. WHO regularly monitors all emerging evidence about this critical topic and will provide an update as more information becomes available.

See full anchorpeople living with HIV with advanced disease, those with low CD4 and high viral load and those who are not taking antiretroviral treatment have an increased risk of infections and related complications in general. It is unknown if the immunosuppression of HIV will put a person at greater risk for COVID-19, thus, until more is known, additional precautions for all people with advanced HIV or poorly controlled HIV, should be employed[1], [2]. At present there is no evidence that the risk of infection or complications of COVID-19 is different among people living with HIV who are clinically and immunologically stable on antiretroviral treatment when compared with the general population. Some people living with HIV may have known risk factors for COVID-19 complications, such as diabetes, hypertension and other noncommunicable diseases and as such may have increased risk of COVID-19 unrelated to HIV. We know that during the SARS and MERS outbreaks there were only a few case reports of mild disease among people living with HIV. To date, there is a case report of a person living with HIV who had COVID-19 and recovered[3] and a small study on risk factors and antiretroviral used among people living with HIV with COVID-19 from China. This study reported similar rates of COVID-19 disease as compared to the entire population and increased risk with older age, but not with low CD4, high viral load level or antiretroviral regimen[4]. Current clinical data suggest the main mortality risk factors are linked to older age and other comorbidities including cardiovascular disease, diabetes, chronic respiratory disease, and hypertension. Some very healthy people have also developed severe disease from the coronavirus infection[5].PL HIV are advised to take the same precautions as the general population[6], [7]:* wash hands often* cough etiquette* physical distancing* seek medical care if symptomatic* self-isolation if in contact with someone with COVID-19 and* other actions per the government responsePeople living with HIV who are taking antiretroviral drugs should ensure that they have at least 30 days and up to 6-month supply of medicines and ensure that their vaccinations are up to date (influenza and pneumococcal vaccines). Adequate supplies of medicines to treat co-infections and comorbidities and addiction should also be ensured.

Most healthy people who become infected with COVID-19 have no symptoms or have mild symptoms. However, there have been healthy people who have progressed to severe disease. People who have underlying illness and who are older are at higher risk for getting severe disease.