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Could visible light be a safe and effective SARS-CoV-2 disinfectant?

Could visible light be a safe and effective SARS-CoV-2 disinfectant?
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New study tests how mutations in SARS-CoV-2 affect antibody neutralization

New study tests how mutations in SARS-CoV-2 affect antibody neutralization Using pseudoviruses with single amino acid substitutions, researchers found that mutations in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reduce monoclonal antibody neutralization differently. However, convalescent sera samples did not lose neutralization potency many and were also effective against the B.1.1.7 (UK-derived) strain. As SARS-CoV-2 continues to infect people around the world, it is also mutating. The majority of the mutations are on the virus spike protein, the key viral component that binds to host cells and the main antigenic target for vaccines and antivirals. Since many vaccines, and antibodies from a previous infection, are based on the earlier circulating strains, it is unknown how immunity will be affected by the new strains.

Neutralizing nanobodies effective against SARS-CoV-2 variants

Neutralizing nanobodies effective against SARS-CoV-2 variants
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SARS-CoV-2 can infect blood monocytes and trigger inflammation, finds study

SARS-CoV-2 can infect blood monocytes and trigger inflammation, finds study Researchers found about 10% of blood monocytes in coronavirus disease 2019 (COVID-19) patients are infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). These monocytes then die, leading to the release of cytokines – a feature associated with severe and critical COVID-19. In some COVID-19 patients, SARS-CoV-2 infection can lead to acute respiratory distress and multi-organ failure and death. Severe disease has been associated with increased pro-inflammatory cytokines and C-reactive protein. Myeloid cells like monocytes, macrophages, and dendritic cells activate the sensors and receptors, called inflammasomes, which induce inflammation in response to infection. These cells are generally the most important source of inflammatory cytokines. Other pathways like NF-kB activation can also cause severe inflammation.

Researcher find an emergent SARS-CoV-2 variant in California

Researchers have found a new SARS-CoV-2 variant in California, USA. This variant is more transmissible than circulating strains but slightly less transmissible than the new N501Y variant and moderately resistant to antibodies in convalescent sera and mRNA vaccines.

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