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An Appeal for Strengthening Genomic Pathogen Surveillance to Improve Pandemic Preparedness and Infection Prevention: the German Perspective
Abstract: The SARS-CoV-2 pandemic has highlighted the importance of viable infection surveillance and the relevant infrastructure. From a German perspective, an integral part of this infrastructure, genomic pathogen sequencing, was at best fragmentary and stretched to its limits due to the lack or inefficient use of equipment, human resources, data management and coordination. The experience in other countries has shown that the rate of sequenced positive samples and linkage of genomic and epidemiological data (person, place, time) represent important factors for a successful application of genomic pathogen surveillance. Planning, establishing and consistently supporting adequate structures ...
SARS-CoV-2 Asymptomatic and Symptomatic Patients and Risk for Transfusion Transmission
Oral swabs, sputum and blood samples from 18 patients with SARS-CoV-2 infection were examined using real-time reverse transcription polymerase chain reaction (RT-PCR) testing. Whereas oral swabs or sputum from the lower respiratory tract were tested RT-PCR positive in all patients, RNAemia was neither detected in 3 patients without symptoms nor in 14 patients with flu-like symptoms, fever or pneumonia. The only patient with RNAemia suffered from acute respiratory distress syndrome (ARDS) and was artificially ventilated in an intensive care unit. Risk for SARS-CoV-2 transmission through blood components in asymptomatic SARS-CoV-2 infected individuals therefore seems negligible but further studies are needed.
A Novel Hepatitis B Virus Species Discovered in Capuchin Monkeys Sheds New Light on the Evolution of Primate Hepadnaviruses
Abstract: Background & Aims All known hepatitis B virus (HBV) genotypes occur in humans and hominoid Old World non-human primates (NHPs). The divergent woolly monkey HBV (WMHBV) forms another orthohepadnavirus species. The evolutionary origins of HBV are unclear. Methods We analysed sera from 124 Brazilian monkeys collected during 2012-2016 for hepadnaviruses using molecular and serological tools, and conducted evolutionary analyses. Results We identified a novel orthohepadnavirus species in capuchin monkeys (capuchin monkey hepatitis B virus [CMHBV]). We found CMHBV-specific antibodies in five animals and high CMHBV concentrations in one animal. Non-inflammatory, probably chronic infection ...
What I Learned About Investing from Darwin
The investment profession is in a state of crisis. The vast majority of equity fund managers are unable to beat the market over the long term, which has led to massive outflows from active funds to passive funds. Where should investors turn in search of a new approach? Pulak Prasad offers a philosophy of patient long-term investing based on an unexpected source: evolutionary biology. He draws key lessons from core Darwinian concepts, mixing vivid examples from the natural world with compelling stories of good and bad investing decisions—including his own. How can bumblebees’ survival strategies help us accept that we might miss out on Tesla? What does an experiment in breeding tame foxes...
