Say two similar people are exposed to different quantities of coronavirus particles. Is one of them likely to get sicker from the ensuing COVID-19 disease than the other?
Researchers have found the viral load in infected children to be very high, especially in the first 2 days of infection. We know that transmissibility or risk of contagion is greater with a high viral load.
Looking at the records of over 73 million patients in the US, of whom 12,033 had Covid-19, the study found those who had recently been diagnosed with a substance use disorder were significantly more at risk of Covid-19 than the average population.
A flurry of recent studies has shown that people with extra weight are more susceptible than others to severe bouts of disease. And experiments in animals and human cells have demonstrated how excess fat can disrupt the immune system.
This post answers some important question about long haulers. In essence some people experience symptoms like fatigue, shortness of breath, joint pain, chest pain, cough. These symptoms are not related to the severity of the infection.
UCSF researchers are taking a closer look at COVID-19’s dizzying array of symptoms to get at the disease’s root causes.
Of the 100 COVID-19 patients, 78 had structural changes to their hearts. Within that group, 76 had a biomarker that is typically found in patients who had a heart attack, and 60 had heart inflammation, called myocarditis. The patients were all “mostly healthy … prior to their illness,” the researchers said.
“Every health system, every public health department, every jurisdiction really has their own ways of going about things,” says Caitlin Rivers, a senior scholar at the Johns Hopkins Center for Health Security. “It's very difficult to get an accurate and timely and geographically resolved picture of what's happening in the US, because there's such a jumble of data.”
Dr. Barzin explains that muscle pain that results from a viral infection is caused by damage to the muscle fibers from the virus itself. The virus also triggers an inflammatory response within your body—through inflammatory cytokines that essentially signal the immune system to get to work—that can cause abnormal tissue breakdown.
The coronavirus that causes COVID-19 has sickened more than 16.5 million people across six continents. It is raging in countries that never contained the virus. It is resurging in many of the ones that did. If there was ever a time when this coronavirus could be contained, it has probably passed. One outcome is now looking almost certain: This virus is never going away.