# Changes in symptoms and characteristics of COVID-19 patients across different variants: two years study using neural network analysis

> Research article (BMC Infectious Diseases, 2023) · cited 21× · AI/ML

**Wikidata**: [openalex:W4389086923](https://www.wikidata.org/wiki/openalex:W4389086923)  
**Source**: https://4ort.xyz/entity/changes-in-symptoms-and-characteristics-of-covid-19-patients-across-different-variants-two-years-study-using-neural-netw