Non-COVID-19 hospitalisation as a negative control outcome in COVID-19 vaccine effectiveness studies - Authors' reply

Lancet Infect Dis. 2024 May;24(5):e276. doi: 10.1016/S1473-3099(24)00107-5. Epub 2024 Feb 22.

¹ Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Artillerivej 5, 2300 Kbh S, Denmark; MRC International Statistics and Epidemiology Group, London School of Hygiene and Tropical Medicine, London, UK. Electronic address: choh@ssi.dk.
² Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Artillerivej 5, 2300 Kbh S, Denmark.
³ Virus Research and Development Laboratory, Virus & Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark.
⁴ Division of Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark.

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