Undetected and undocumented cases of COVID-19 were largely responsible for the rapid spread of the virus in China. 86% of all infections were undocumented before the January 23 Wuhan travel shutdown. Per person, the undocumented infections were half as contagious as documented infections but were the source of two-thirds of documented infections.
Researchers report the median time from exposure to symptoms for the COVID-19 virus is 5.1 days. 97.5% of people who develop symptoms of coronavirus will do so within 11.5 days of exposure. For every 10,000 people quarantined for 14 days, an estimated 101 would develop symptoms after release.
EIDD-2801, a new antiviral drug, has the potential to treat coronavirus. A new study reveals the drug can prevent severe lung injury in mouse models and cultured human lung cells infected with COVID-19. The drug will soon be ready for human testing.
Researchers confirm ACE inhibitors and ARBS medications may increase the risk of patients with COVID-19 developing more severe symptoms.
Preliminary results from a new model suggest the COVID-19 lockdown should last for more than six weeks. The advice is based on data which shows it takes countries almost three weeks to see a growth rate staying below 10% and doubling time over seven days. It takes a month to keep the growth rate under control and at 1%, and 45 days to achieve containment.
The effects of heavy drinking extend beyond those who use alcohol, a new study reports. Each year, one in five American adults are harmed as a result of someone else's drinking. People report threats of harassment, vandalism, physical aggression, financial and family problems, and harm from DUIs as main problems associated with other people's drinking. Researchers say the type of harm experienced differ by gender, with women more likely to report financial or family problems, and men reporting physical aggression and vandalism more often. Women are more likely to experience harm as a result of a family member's drinking, while men are more likely to be harmed as a result of alcohol use by a person outside the family. Even those who don't drink heavily are at three times higher risk of antisocial behaviors.
Johns Hopkins University researchers propose using antibodies from the plasma or serum of those who have recovered from COVID-19 to help boost the immunity of newly infected patients and for those at risk of contracting the disease. Researchers say the antibodies may bind to and neutralize SARS-CoV-2. The technique has been proven successful in prior outbreaks, including the SARS epidemic and the 1918 flu pandemic.
Researchers have launched a new interactive tool that compares hospital capacity with projected demand throughout the nation's 306 hospital regions. The app provides a clear picture of best and worst scenarios across each region for hospital capacity during the COVID-19 pandemic.
A new neuroimaging study helps researchers predict the response people will have to public health campaigns. The study may help epidemiologists design campaigns to help change people's attitudes and behaviors.
Researchers say that to date, primary transmission methods of concern for coronavirus have been near field transmission via sneezing and coughing, and hand-to-face transportation of the virus after touching infected surfaces. They warn more attention needs to be paid to the inhalation of aerosols generated from breathing and talking.
Researchers report young adults who live in states with liberal policies are more likely to have used cannabis within the last year than those living in more conservative states. However, the rate of cannabis use disorder is increased in states with more conservative policies.
A new COVID-19 study reveals children with coronavirus, even those who are asymptomatic, can shed the virus for up to three weeks following infection.