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VaccinePhoto byImage by Katja Fuhlert from Pixabay. "Moderna's trial shot uses the same mRNA vaccine technology that has played an integral role in the success of COVID-19 vaccines, and the combination with Keytruda "has the capacity to be a new paradigm in the treatment of cancer," Paul Burton, Moderna's chief medical officer said in an interview.

In biology, it’s always about the dose, even at the nanoscale level. Too much of anything is hardly ever a good thing, and too little of anything is hardly ever helpful. That’s why pinpointing the threshold — the tipping point —where an effect is effectuated is vital yet tricky because the threshold could differ slightly from person to person. No human bodies work identically, only very similarly. And that slight deviation may be enough to trigger a rare adverse event, such as myocarditis from a dose of the Covid-19 mRNA vaccine.

(Justin Sullivan/Getty Images) (BROOKLYN, N.Y.) The Brooklyn Children's Museum in Crown Heights is one of 10 city-run sites that will offer the Moderna COVID-19 vaccine for children ages six months to five years old starting Wednesday.

Moderna (MRNA) reported today (April 8) the second recall of its Covid-19 vaccine due to contamination. Reuters reported that Moderna recalled 764,900 doses of its COVID-19 vaccine made by its contract manufacturer Rovi, based in Spain. That could hurt MRNA stock going forward, despite some other recent good news.

(Spencer Platt/Getty Images) (NEW YORK) Happy Friday, fellow New Yorkers! Today is March 18, and this is the New York City Daily Roundup — an all-in-one article with the latest news from across the five boroughs.