A new study confirms the low likelihood that coronavirus contamination on hospital surfaces is infectious. The study is the original report on recovering near-complete SARS-CoV-2 genome sequences directly from surface swabs.
Picture viral RNA as a single component that you can break into one million pieces. Now imagine reassembling those pieces together, literally like a jigsaw puzzle. If there’s a chipped corner or if a piece won’t fit snugly as it should, consider that a virus mutation or variant. That’s genomic sequencing, in a nutshell, when it comes to identifying variants of COVID-19, according to Peter Stoilov, associate professor of biochemistry at the West Virginia University School of Medicine.
Human genetic diversity wouldn’t be possible without DNA crossovers in egg and sperm cells. Two Harvard Medical School studies provide new insights into how crossovers go right–and wrong, leading to infertility, miscarriages and birth defects.
Using an innovative genome sequencing technology, researchers assembled the complete genetic blueprint of two basmati rice varieties, including one that is drought-tolerant and resistant to bacterial disease. The findings, published in Genome Biology, also show that basmati rice is a hybrid of two other rice groups.
Infectious disease scientists identified strains of group A streptococcus that are less susceptible to commonly used antibiotics, a sign that the germ causing strep throat and flesh-eating disease may be moving closer to resistance to penicillin and other related antibiotics known as beta-lactams.