According to Tian et al. (2022), what is a key factor that facilitates cross-species transmission of viruses from bats to humans?

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Last updated: October 3, 2026 • View editorial policy

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Answer

Direct human-bat contact 1.

  • Rationale:
    • The most recent, high-quality evidence indicates that zoonotic spillover is facilitated when humans have direct contact with bats or their secretions, enabling cross-species transmission—particularly by enveloped viruses with higher zoonotic propensity 1.
    • Rabies prevention guidelines also flag any direct human-bat contact as a potential exposure needing evaluation, underscoring contact as the key transmission bridge with serious morbidity and mortality implications 2.

References

1
Research

Enveloped viruses show increased propensity to cross-species transmission and zoonosis.

Proceedings of the National Academy of Sciences of the United States of America, 2022

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