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<div>In June 2020, the WHO Virus Evolution Working Group was established with a specific focus on SARS-CoV-2 variants, their phenotype and their impact on countermeasures. This later became the Technical Advisory Group on SARS-CoV-2 Virus Evolution. In late 2020, the emergence of variants that posed an increased risk to global public health prompted WHO to characterize some as variants of interest (VOIs) and variants of concern (VOCs) in order to prioritize global monitoring and research, and to inform and adjust the COVID-19 response. From May 2021 onwards, WHO began assigning simple, easy-to-say labels for key variants.</div><div></div><div></div><div></div><div>how to download variant in sap</div><div></div><div>Download File →
https://t.co/gdgedwsMmx</div><div></div><div></div><div></div><div></div><div></div><div></div><div>Considerable progress has been made in establishing and strengthening a global system to detect signals of potential VOIs or VOCs and rapidly assess the risk posed by SARS-CoV-2 variants to public health. It remains critical that these systems are maintained, and data are shared, according to good principles and in a timely fashion, as SARS-CoV-2 continues to circulate at high levels around the world. While monitoring the circulation of SARS-CoV-2 globally, it also remains essential to monitor their spread in animal populations and chronically infected individuals, which are crucial aspects of the global strategy to reduce the occurrence of mutations that have negative public health implications. In March 2023, WHO updated its tracking system and working definitions for variants of concern, variants of interest and variants under monitoring. They can be found here. The previous working definitions can be found here.</div><div></div><div></div><div>When a variant refers to another variant by using the VT_VARIANT VT_BYREF vartype, the variant being referred to cannot also be of type VT_VARIANT VT_BYREF. VARIANTs can be passed by value, even if VARIANTARGs cannot.</div><div></div><div></div><div>The new COVID-19 variant that scientists call JN.1 now makes up about 44.1% of COVID-19 cases across the country, the Centers for Disease Control and Prevention estimated Friday, marking another week of the fast-spreading variant's steep rise in the U.S.</div><div></div><div></div><div></div><div></div><div></div><div></div><div>"JN.1's continued growth suggests that the variant is either more transmissible or better at evading our immune systems than other circulating variants. It is too early to know whether or to what extent JN.1 will cause an increase in infections or hospitalizations," the CDC said Friday.</div><div></div><div></div><div>Variants grouped under the BA.2.86 umbrella, which include JN.1, have also made up the largest share of variants detected from the CDC's airport testing program on arriving international travelers in recent weeks.</div><div></div><div></div><div>In a split with the WHO, a CDC spokesperson confirmed Friday afternoon that the Biden administration has so far decided against elevating JN.1 to being a standalone "variant of interest." Instead, the strain remains grouped with its BA.2.86 parent as a "variant being monitored."</div><div></div><div></div><div>For now, those trends remain a fraction of the steep record surge recorded over the winter of 2021-2022, which strained hospitals after the original Omicron variants swept the U.S. over that year's Christmas and New Year's holidays.</div><div></div><div></div><div>+100. I have been having this issue for years, and had hoped the newest Figma prototyping update would fix it. I have a published library with variant interactions for components such as buttons, which include standard interactions such as hover and press. However, when I use those buttons within prototypes in individual files, the variant interactions such as on hover and on press conflict with the prototype interactions I need, such as navigate to.</div><div></div><div></div><div>The class template std::variant represents a type-safe union. An instance of std::variant at any given time either holds a value of one of its alternative types, or in the case of error - no value (this state is hard to achieve, see valueless_by_exception).</div><div></div><div></div><div>As with unions, if a variant holds a value of some object type T, the object representation of T is allocated directly within the object representation of the variant itself. Variant is not allowed to allocate additional (dynamic) memory.</div><div></div><div></div><div>Consistent with the behavior of unions during aggregate initialization, a default-constructed variant holds a value of its first alternative, unless that alternative is not default-constructible (in which case the variant is not default-constructible either). The helper class std::monostate can be used to make such variants default-constructible.</div><div></div><div></div><div>Over the past 18 months, ALPHV/Blackcat has emerged as the second most prolific ransomware-as-a-service variant in the world based on the hundreds of millions of dollars in ransoms paid by victims around the world. Due to the global scale of these crimes, multiple foreign law enforcement agencies are conducting parallel investigations.</div><div></div><div></div><div>Variant types model values that may assume one of many known variations. Thisfeature is similar to "enums" in other languages, but each variant form mayoptionally specify data that is carried along with it.</div><div></div><div></div><div>The primary way to interact with variants is throughpattern matching. When pattern matching over a variantthe compiler can ensure that all cases are covered exhaustively so that thereis no undefined behavior. This is also helpful when adding new cases to avariant later, because the compiler will present a clear list of code that needsto be updated.</div><div></div><div></div><div>There is a subtle difference between constructors that accept two arguments andconstructors that accept one argument that is a 2-tuple. Pay close attentionto which kind of variant you are dealing with:</div><div></div><div></div><div>The variant class template is a safe, generic, stack-baseddiscriminated union container, offering a simple solution for manipulating anobject from a heterogeneous set of types in a uniform manner. Whereasstandard containers such as std::vector may be thought of as"multi-value, single type,"variant is "multi-type,single value."</div><div></div><div></div><div>This site covers HGVS nomenclature, the recommendations for the description of sequence variants in DNA, RNA and protein sequences. It is used to report and exchange information of such variants and serves as an international standard. When using the recommendations please cite: Den Dunnen et al. 2016, Hum.Mutat. 37:564-569. HGVS-nomenclature is authorised by the Human Genome Organization (HUGO), under the responsibility of the HGVS Variant Nomenclature Committee (HVNC).</div><div></div><div></div><div>Discussions regarding HGVS nomenclature are necessary in order to further improve them. What is listed on these pages represents the current consensus of the recommendations. We invite everybody to send us question, comments or examples of cases that are not yet covered, with a suggestion of how to describe these ( E-mail: VarNomen HUGO-int.org (remove spaces). For questions regarding the description of variants, do not forget to mention the reference sequence used.</div><div></div><div></div><div>Case numbers and hospitalizations are once again on the rise in the U.S., especially in states where vaccination percentages are low and the Delta variant is surging. On July 16, 2021, the Centers for Disease Control and Prevention (CDC) reported a 7-day average increase in new COVID-19 cases of 69.3% and a 35% increase in hospitalizations. Still, it is difficult to determine whether Delta is actually making people sicker than previous forms of the virus or if it is simply circulating amongst more vulnerable populations where case numbers are high, vaccination rates are low and increased stress on hospital systems is impacting patient care and disease outcomes.</div><div></div><div></div><div>Studies show that 2 doses of vaccines are effective at preventing hospitalization and death, but neutralization levels of vaccinated sera are lower against the Delta variant compared to the original strain. A study published in the New England Journal of Medicine tested neutralization activity of sera from individuals who had recovered from natural SARS-CoV-2 infection and sera from individuals who had been fully vaccinated with Moderna or Pfizer vaccines against infectious B.1.617.2 virus. Data from the study indicated that, on average, the Delta variant was 2.9 times less susceptible to neutralization than the Wuhan strain, but most convalescent serum samples and all vaccination serum samples showed detectable neutralization activity. As a result, researchers concluded that immunity conferred by mRNA vaccines is likely to be retained against the Delta variant.</div><div></div><div></div><div>These results were supported by research, published in Nature, that evaluated the sensitivity of infectious Delta virus against monoclonal antibodies, convalescent sera and sera developed after vaccination. The study found that some antibodies targeting the N-terminal domain and receptor binding domain of the spike protein (S protein) showed impaired binding and neutralization of the Delta variant. Additionally, convalescent sera, collected up to 12 months post-symptoms from individuals who had recovered from natural SAR-CoV-2 infection, were 4-fold less effective at neutralizing Delta than Alpha. Sera from individuals who were partially vaccinated (had received 1 dose of Pfizer or AstraZeneca vaccine) showed little to no neutralizing activity against Delta. Sera from 95% of those who received 2 doses of either vaccine generated a neutralizing response that was 3-5-fold less potent against Delta than Alpha.</div><div></div><div></div><div>Meanwhile, companies are already developing booster doses to improve efficacy against circulating variants. Pfizer plans to seek FDA authorization for its booster dose, which is expected to elicit stronger neutralization against the Delta variant. However, antibodies alone do not give the whole picture of immune protection. How other vaccine-elicited immune components, such as T cells and B cells, respond when challenged by the Delta variant is still relatively unclear, and conversation about whether booster doses are needed yet are ongoing.</div><div></div><div></div><div>The receptor binding domain is the portion of the spike protein that binds directly to human ACE2 receptors. Delta has 3 RBD mutations. The first, a lysine to asparagine substitution at position 417, is present in some, but not all sequences of B.1.617.2. It is also common to the Beta variant and has been associated with conformational changes to S protein, which may aid in immune escape. The second mutation, a leucine to arginine substitution at position 452, is common to the former variant of interest Epsilon, and is known to increase affinity for ACE2 receptors found on the surface of a variety of human cells, including the lungs. And the third, a threonine to lysine substitution at position 478, is common to the B.1.1.519 lineage, and has been predicted to increase electrostatic potential and steric hindrance, which may further increase RBD/ACE2 binding affinity and enable immune escape.</div><div></div><div> df19127ead</div>
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