Individuals can be reinfected with the same strain of a virus.
Multiple clinical and epidemiological studies confirm that individuals can experience reinfection with viral strains, often facilitated by waning host immunity or pathogen evolution.
The retrieved literature contains several clinical and modeling studies documenting viral reinfections and reinfection mechanisms, directly supporting the claim.
Janice Cho, Scott Cunningham, Meng Pu, Ryan J Lennon, Jennifer Dens Higano, Patricio Jeraldo, Priya Sampathkumar, Samantha Shannon, Purna C Kashyap, Robin Patel. <i>Clostridioides difficile</i>Whole-genome Sequencing Differentiates Relapse With the Same Strain From Reinfection With a New Strain. 2020. https://doi.org/10.1093/cid/ciaa159
Whole-genome sequencing differentiated patient relapse from reinfection with the same or new strains.
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Nicole Pedro, C. N. Silva, A. C. Magalhães, B. Cavadas, A. M. Rocha, A. C. Moreira, M. Gomes, Diogo Silva, J. Sobrinho-Simões, A. Ramos, M. J. Cardoso, R. Filipe, Pedro Palma, F. Ceia, Susana Silva, J. T. Guimarães, António Sarmento, V. Fernandes, L. Pereira, Margarida Tavares. Dynamics of a dual SARS-CoV-2 strain co-infection on a prolonged viral shedding COVID-19 case: insights into clinical severity and disease duration. 2020. https://doi.org/10.1101/2020.12.22.20248392
Discusses molecularly proven cases of SARS-CoV-2 reinfection and multi-strain dynamics.
Somya Aggarwal, Forrest C. Walker, James S. Weagley, B. McCune, Xiaofen Wu, L. Schriefer, Heyde Makimaa, D. Lawrence, Pratyush R. Sridhar, Megan T. Baldridge. Interferons and tuft cell numbers are bottlenecks for persistent murine norovirus infection. 2024. https://doi.org/10.1371/journal.ppat.1011961
Demonstrates that persistent viral infection involves a series of reinfection events over time.
Linlin Wang, Juping Zhang, Zhen Jin. Evolutionary dynamics analysis of virulence in viral infectious disease co-infection model. 2025. https://doi.org/10.1142/s0218339026500099
Formulates transmission models that incorporate reinfection mechanisms for viral infectious diseases.
James J Bull, Katia Koelle, Rustom Antia. Waning immunity drives respiratory virus evolution and reinfection.. 2024. https://doi.org/10.1101/2024.07.23.604867
Explains how waning immunity and antigenic variation drive reinfections with respiratory viruses.
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