This is the 6662nd most frequent German word.
erkältungswellen
"Erkältungswellen" means "waves of colds" or "cold outbreaks."
The word 'Erkältungswellen' refers to waves or periods during which many people experience colds.
Im Winter treten häufig Erkältungswellen auf.
In winter, cold waves frequently occur.
Here, 'Erkältungswellen' refers to the seasonal periods of widespread colds impacting attendance.
Die Schule war während der Erkältungswellen fast leer, da viele Schüler erkrankten.
The school was almost empty during the cold waves as many students fell ill.
In this sentence, 'Erkältungswellen' is used to denote the preemptive preparation for periods of frequent illness due to colds.