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All figures (8)
Figure 2. Total infection risk and relative contribution under different transmission route dominant scenarios. Note: parameter setting for the models are: (A) default, see Table 1; (B) face to face exposure time ๐ก๐,๐ = 0.5 โ and ACH=0.5; (C) largest high viral-load droplet, ๐๐ = 30 ยตm and room exposure time ๐ก๐ = ๐ก๐,๐ = 1 (D) doseresponse coefficient for direct inhalation, ๐๐๐ = 1; (E) virus concentration dilution rate in larger droplets ๐๐๐ (๐๐) = 1 and the dose-response coefficient for membrane exposure ๐๐ = 1; (F) all dose effects coefficient ๐๐ = ๐๐๐ = ๐๐ = 1 and nasal discharge dilution factors ๐๐๐ = 1
Figure 4. Effect of ventilation rates on contribution ratios of different transmission routes. Note: face to face exposure time 30 minutes and other parameter settings see Table 1.
Figure 3. Effect of close-contact exposure distance on contribution ratios of different transmission routes. Note: parameter setting see Table 1.
Table 1. Input data for the multi-route transmission mode
Table 2. Overall infection risk during the 10-hour exposure with varying exposure distance (๐ ๐,๐), the largest high viral-load droplet size (๐๐) and cut-off size for airborne route (๐๐).
Figure 5. Contribution ratios of different transmission routes with varying doseresponse coefficient for membrane exposure, ๐๐ , and nasal discharge virus dilution rate, ๐๐๐. Other parameters were set the same as listed in Table 1.
Figure 6. Contribution ratios of different transmission routes with varying doseresponse coefficient for inhalation exposure, ๐๐๐ , and diameter of largest high viralload droplet, ๐๐. Other parameters were set the same as listed in Table 1.
Figure 1. Illustration of different transmission routes of respiratory disease in indoor environments. ๐ผ is the spreading angle of the idealized respiratory jet of the infector and ๐ ๐๐ is the exposure distance.
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DOI
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Multi-route respiratory infection: when a transmission route may dominate
[...]
Caroline X. Gao
1
,
Caroline X. Gao
2
,
Yuguo Li
3
,
Jianjian Wei
4
,
Sue M. Cotton
2
,
Matthew J. Hamilton
2
,
Lei Wang
4
,
Benjamin J. Cowling
3
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Institutions (4)
Monash University
1
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University of Melbourne
2
,
University of Hong Kong
3
,
Zhejiang University
4
11 Apr 2020
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medRxiv