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  2. SARS-CoV-2 Omicron variant - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-2_Omicron_variant

    In May 2022, a preprint indicated Omicron subvariants BA.4 and BA.5 could cause a large share of COVID-19 reinfections, beyond the increase of reinfections caused by the Omicron lineage, even for people who were infected by Omicron BA.1 due to increases in immune evasion, especially for the unvaccinated. However, the observed escape of BA.4 and ...

  3. Lung cancer - Wikipedia

    en.wikipedia.org/wiki/Lung_cancer

    Lung cancer is the most diagnosed and deadliest cancer worldwide, with 2.2 million cases in 2020 resulting in 1.8 million deaths. [3] Lung cancer is rare in those younger than 40; the average age at diagnosis is 70 years, and the average age at death 72. [2] Incidence and outcomes vary widely across the world, depending on patterns of tobacco use.

  4. Small-cell carcinoma - Wikipedia

    en.wikipedia.org/wiki/Small-cell_carcinoma

    Small-cell lung carcinoma (SCLC) has long been divided into two clinicopathological stages, termed limited stage (LS) and extensive stage (ES). [8] The stage is generally determined by the presence or absence of metastases, whether or not the tumor appears limited to the thorax, and whether or not the entire tumor burden within the chest can feasibly be encompassed within a single radiotherapy ...

  5. Is BA.5 more dangerous? Everything you need to know ... - AOL

    www.aol.com/news/ba-5-more-dangerous-everything...

    BA.5 symptoms appear to closely mirror those of its omicron relatives. Mark Heise, an immunologist at UNC- Chapel Hill, said infected patients often report sore throats, muscle aches and upper ...

  6. SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-2

    One meta-analysis found that 17% of infections are asymptomatic, and asymptomatic individuals were 42% less likely to transmit the virus. [ 72 ] However, an epidemiological model of the beginning of the outbreak in China suggested that "pre-symptomatic shedding may be typical among documented infections" and that subclinical infections may have ...

  7. Asymptomatic - Wikipedia

    en.wikipedia.org/wiki/Asymptomatic

    Asymptomatic (or clinically silent) is an adjective categorising the medical conditions (i.e., injuries or diseases) that patients carry but without experiencing their symptoms, despite an explicit diagnosis (e.g., a positive medical test).