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DURHAM, N.C. – Duke scientists have identified a previously unknown barrier that separates the bloodstream from smelling cells in the upper airway of mice, likely as a way to protect the brain. But
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibits variable immunity responses among hosts based on symptom severity. Whether immunity in recovered individuals is effective for avoiding reinfection is poorly understood. Determination of immune memory status against SARS-CoV-2 helps identify reinfection risk and vaccine efficacy. Hence, after recovery from COVID-19, evaluation of protective effectiveness and durable immunity of prior disease could be significant. Recent reports described the dynamics of SARS-CoV-2 -specific humoral and cellular responses for more than six mon...
A longtime volunteer of the Occidental Fire Department has died. 68 year old John Gonella, who served for over 50 years as a volunteer firefighter, died on
But that didn't stop several people from turning this into an argument to show why the vaccine isn't effective, even though in my mind this shows precisely why we all need to get vaccinated, to protect those around us who are perhaps immunocompromised and can't mount an effective response to these vaccines. >> your point is spot on. it's really unfortunate, despicable and disgraceful that we have anti-science opportunists looking to scapegoat a brave man, and to scapegoat what we know is otherwise false. and let me make this clear for everyone. the vaccines are proven to be safe and effective....
He's an nbc news medical contributor. thank you for being on this morning. we do have a couple of covid questions for you. specific to this story, we had heard that general powell died of covid related complications and we heard that he had other diagnoses that he was dealing with. can you explain the booster and the vaccine's efficacy. what do you think may have happened here? >> what we know of multiple -- it's a cancer of the cells that produce antibodies. these plasma cells and your