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A team of researchers found that the coronavirus that causes COVID-19 can be detected in tears sampled by ocular swabs, a new study has shown. The researchers analysed samples from patients diagnosed with the disease by conventional methods and admitted to the Hospital, according to the study published in the Journal of Clinical Medicine. SARS-CoV-2 was detected in 18.2 per cent of the samples, suggesting this method could be an alternative to the conventional swabbing method, which is [...]

In an alternate universe where our solar system's planets went to school, those walking around with graceful rings would most definitely be the gifted popular kids in the class, and for good reason! Even in our own universe, ring systems are a striking feature. Not all planets are lucky enough to have them, for these rings aren’t easy to handle. They form and exist under very specific conditions, and most of them are found within a critical distance of their host, known as the [...]

A team of Brazilian researchers has discovered that a gene can protect people, even those aged 90 and above, from the deadly COVID disease. Two research papers found that the frequency of variants of the gene 'MUC22' was twice as high in the mild COVID-19 group as in severe patients and higher in resilient super-agers. This gene belongs to the "mucin" family and is associated with the production of mucus, which lubricates and protects the airways. On the other hand, [...]

For the first time, scientists have shown that infection by the COVID virus changes the functioning of host cell RNA, providing clues as to how different variants can escape the immune system and serve as a basis for developing novel treatments. Researchers at the Federal University of Sao Paulo (UNIFESP) in Brazil arrived at this conclusion by analysing 13 datasets obtained from four viral, human and animal cell RNA studies. The study, published in Frontiers in Cellular and [...]

Patients with the most severe post-COVID-19 smell and taste disorders are likely to perform worse in cognitive tests, especially when these involve memory. A study has strengthened the hypothesis that loss of smell could be an early sign of the impending onset of Alzheimer's disease. In the study, Brazilian researchers analysed clinical data from 701 patients hospitalised for moderate or severe COVID-19. The results, reported in the European Archives of Psychiatry and Clinical [...]

A team of international researchers have found that the novel coronavirus can continue to be present in some human bodies for up to 232 days. Researchers from France's Pasteur Institute, the University of Sao Paulo (USP) and Oswaldo Cruz Foundation (Fiocruz) in Brazil conducted a study involving 38 Brazilian patients. The patients were followed until they tested negative twice or three times consecutively by RT-PCR. Of the 38 cases tracked, two men and a woman were atypical in the [...]

The coronavirus variant detected in the northern Brazilian state of Amazonas is twice as contagious and capable of re-infecting those who have already had COVID-19, according to a study. The Sao Paulo Research Foundation said on Tuesday that the scientific research group was coordinated by Ester Sabino, an expert on infectious diseases at the University of Sao Paulo, and Nuno Faria, a researcher at Oxford University, reports Xinhua news agency. The virus variant was initially detected in [...]

A team of researchers has for the first time discovered hybrid fungus involved in lung infections and are investigating the role of fungi in COVID-19. Several COVID-19 patients have died owing to concomitant infection by Aspergillus. Aspergillus latus, a species of fungus previously found only in soil or plants, has been found for the first time in a hospital environment by an international group of researchers. The group sequenced its genome and discovered that it is actually a hybrid and [...]