Are People Who Test Positive Again for COVID-19 Still Infectious?

A reader, CSG, asked me a question. She knew someone who became ill and tested positive for COVID-19. That person has since recovered and asymptomatic. The problem is the repeat nasal swab after 2 months is still positive. Because of the positive repeat test, it is believed that the person is still infectious and so…

Hydroxychloroquine Lessens Mortality in Severe COVID-19 but Monitor the QT

A preliminary study from Gautret from France showed that the combination of hydroxychloroquine and azithromycin lead to a significant reduction of SARS-CoV-2 viral load in a small number of  COVID-19 patients.  A study from Tongji Hospital, Shanghai Institute of Materia Medica, and Shanghai Institute of Advanced Histochemical Studies in China published a new study showing that hydroxychloroquine…

Diabetic Complications, Pancreatitis, and COVID-19

The pancreas is an organ inside the abdomen that is located right behind the stomach. It is essential for life as it produces digestive enzymes and hormones. Without the pancreas, proteins, fats, and carbohydrates will be hard to digest. Insulin and glucagon come from the pancreas. In the absence of these hormones, blood sugar control…

NHC Inhibits SARS-CoV-2 and other Coronaviruses in Human Respiratory Cells and Mice

A ribonucleoside called NHC is a promising drug against COVID-19. It was studied by a collaboration of the University of North Carolina at Chapel Hill, Emory University, Vanderbilt University,  Drug Innovation Ventures at Emory (DRIVE), and the CDC. The study was published recently in  Science Translational Medicine. In the study, NHC is in the form…

How Long do Covid-19 Patients Get Hospitalized?

The duration of Covid-19 hospitalization is longer than average. This article is from a study of 420 Covid-19 patients hospitalized at  Shenzhen Third People’s Hospital in Shenzhen China, from January 11 to March 10, 2020. The 3 classes of Covid-19 based on symptoms Among the 420 patients, 23 or 5.5% were clinically mild. 394 or …

Covid-19 Spread with Air-conditioning

From January to February 2020, 10 people from 3 families were infected by  Covid-19 after eating in an air-conditioned restaurant. Here is how it happened. The restaurant is 145 m². The tables were about 1 meter apart. There is an air-conditioned, as shown in the figure below, next to table C. An exhaust fan is…

Study Explains the Silent Spread of Covid-19

A study published at Oxford Academic gives a reason why millions have Covid-19 in more than 180 countries. In this study, the scientist compared the growth of the SARS virus and SARS-CoV-2 and the damage they cause in human lung tissues. They also measured the immune response of the lungs to both diseases. The SARS…

Will the Pandemic get Better with Warm Weather?

There is a widespread belief that warmer weather in the summertime will lower the number of Covid-19 cases. The reason is that the warm sun and humidity will kill the SARS-CoV-2 virus. The SARS-CoV-2 causes Covid-19 disease. This is what the National Academy of Sciences, Engineering, and Medicine report tried to answer. The paper is…

The Asymptomatic and Symptomatic Covid-19 are Equally Infectious

There are two studies in this article: the Ningbo Study and its reanalysis. The Ningbo Municipal Center made the Ningbo Study for Disease Control and Prevention. The purpose was to know how infectious is the new coronavirus infection. That new coronavirus infection is later known as the COVID-19 disease. The Ningbo study concluded that people…