A potential upswing of COVID was the impetus behind a blast of interest in (NASDAQ: NVAX) stock on Tuesday.

That morning, it was reported by various media outlets that first lady Jill Biden had tested positive for Covid the previous day. Novavax is one of three companies with a vaccine green-lighted by the Food and Drug Administration (FDA), so it was hardly surprising when its share price zoomed more than 10% higher on the news.

The White House officially announced the development that morning, adding that the first lady was experiencing "mild symptoms," and that the president had tested negative.

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Source Fool.com