TWiV reviews the emergence of remdesivir-resistant SARS-CoV-2 during treatment of a persistently infected immunocompromised patient, and how altered TMPRSS2 utilization by the Omicron variant influences infectivity and fusion.

In COVID-19 clinical update #106, Daniel Griffin covers failure of ivermectin to improve hospitalization, increased hospitalization of children with Omicron, seroconversion of children versus adults, effectiveness of Pfizer mRNA vaccine in children, high vaccine effectiveness in Finland against Omicron, distinct long COVID clinical phenotypes, and estimating worldwide excess mortality.

In COVID-19 clinical update #105, Daniel Griffin discusses changes in brain structure after infection, dementia in patients with pneumonia, Paxlovid in children, mask effectiveness in schools, host factors and severe disease, post-acute symptoms, and the mission of CEPI.

In COVID-19 clinical update #104, Daniel Griffin reviews effectiveness of mRNA vaccines among children, number of children affected by disease, accuracy of rapid antigen tests, CDC guidance for prevention strategies, monoclonal antibody effectiveness, predicting progression to severe respiratory failure from pneumonia, risk of long COVID after two vaccine doses, and peripheral neuropathy in long COVID.

In COVID-19 clinical update #102, Daniel Griffin reviews children and COVID, effectiveness of maternal vaccination, vaccines for immunocompromised, primary care physicians and vaccination rates, booster safety among adults, placentitis, azithromycin, oral Nirmatrelvir, Omicron antibody evasion, EUA for bebtelovimab, IL-1 blocking agents, thromboprophylaxis, effectiveness of vaccines against long COVID, and risks of mental health outcomes.

TWiV reviews an experimental, intranasally administered SARS-CoV-2 vaccine that utilizes adenovirus vectors to deliver three viral proteins and induces immunity to ancestral and variant isolates.

In COVID-19 clinical update #101, Daniel Griffin discusses children and COVID, human challenge study results, effectiveness of mask use, Omicron boost in macaques, mucosal vaccine candidate, long-term cardiovascular outcomes, and global vaccine perceptions.

In COVID-19 clinical update #100, Daniel Griffin, from Accra, Ghana, reviews the challenges in evaluating Omicron severity, over 800 deaths in children, Pfizer vaccine EUA application for under 5 year olds, false positives from soft drinks, Novavax vaccine EUA application, childhood experiences and vaccine hesitancy, fourth vaccine dose in Israel, effects of antivirals and monoclonals against Omicron, and multiple factors associated with PASC.