Erkältungswelle (f)
[ɛɐ̯ˈkɛltʊŋsvɛlə]
An Erkältungswelle is a seasonal surge in common cold infections spreading through a population, most often in autumn or winter. Depending on whether the context is everyday speech, journalism, or public health, English speakers reach for different equivalents.
1. wave of colds
The most natural literal equivalent, widely used in everyday speech and journalistic writing.
2. cold outbreak [technical] · medical
Preferred in public health reports and epidemiological contexts, where 'outbreak' signals a documented and tracked cluster of cases.
Notes
Avoid the literal calque 'cold wave': in English this refers to a sudden drop in air temperature, a weather event, not an illness surge. Using it for a run of common colds will confuse native speakers. Stick to 'wave of colds', 'cold outbreak', or 'surge in cold cases' instead.