Nature CommunicationsExtracting circumstances of Covid-19 transmission from free text with large language modelsGaston Bizel-BizellotSimon GalmicheBenoît LelandaisTiffany CharmetLaurent CoudevilleArnaud FontanetChristophe Zimmer2025-07-01Full textDOI https://doi.org/10.1038/s41467-025-60762-w