(名詞/可數) 三疫大流行 － 新冠肺炎 (Covid-19)、流感 (flu) 以及呼吸道融合病毒 (respiratory syncytial virus , RSV) 同時大爆發。
引句：
The United States has already plunged into one of the roughest seasons of winter illnesses in decades. After nearly three years of being sequestered, children and adults are back out in crowds, with no masks, no distancing, and viruses waiting with open arms … With what’s now being called a tripledemic, which includes Covid-19, flu, and RSV (respiratory syncytial virus) already spreading rapidly, the winter ahead could be worse.
[forbes.com, 28 November 2022]
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