# What is the difference between the first and the second/third wave of Covid-19? – German perspective

> Research article (Journal of Orthopaedics, 2021) · cited 76× · AI/ML

**Wikidata**: [openalex:W3124108769](https://www.wikidata.org/wiki/openalex:W3124108769)  
**Source**: https://4ort.xyz/entity/what-is-the-difference-between-the-first-and-the-second-third-wave-of-covid-19-german-perspective