What question did this study set out to answer?

To determine how within-host growth-limiting regulatory mechanisms influence the expansion dynamics and non-exponential trajectories of asexual Plasmodium falciparum infections.

September 28, 2026Malaria JournalOpen Access

The dynamics of Plasmodium falciparum during the expansion phase of the asexual stage of infection

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To determine how within-host growth-limiting regulatory mechanisms influence the expansion dynamics and non-exponential trajectories of asexual Plasmodium falciparum infections.
Analyzed daily parasite counts from 294 historical neurosyphilis malariotherapy patients and quantitative PCR data from 12 controlled human malaria infection trial participants.
Extended an age-structured mathematical model to incorporate growth-limiting feedback on merozoites and blood-stage parasites, fitted via Bayesian Markov chain Monte Carlo methods.
Evaluated individual fit using leave-one-out cross-validation and inferred population parameters across three parasite strains using hierarchical Bayesian modeling.
Identified three distinct expansion trajectories: sustained exponential growth, growth followed by a plateau, and growth followed by a decline.
Favoured the extended model in 52% of patients, accurately capturing the onset and magnitude of growth attenuation in non-exponential infections.
Estimated that growth-limiting mechanisms activated 4–6 days after microscopic detection, progressively reducing effective parasite replication across all evaluated strains.

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Implication

Mathematical modeling study uncovers growth-limiting mechanisms attenuating Plasmodium falciparum expansion in humans, indicating delayed host responses shape parasite growth.

Cite This Study

Saralamba et al. (2026) studied this question.

synapsesocial.com/papers/6ab9b5a47822ec8fc3d90933 https://doi.org/10.1186/s12936-026-06150-1

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Implication

Mathematical modeling study uncovers growth-limiting mechanisms attenuating Plasmodium falciparum expansion in humans, indicating delayed host responses shape parasite growth.

The dynamics of Plasmodium falciparum during the expansion phase of the asexual stage of infection

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Implication

Cite This Study

The dynamics of Plasmodium falciparum during the expansion phase of the asexual stage of infection

Key Points

Discussion

Implication

Cite This Study

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