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Table 1 Configuration of the stochastic distribution for invasion

From: Risk analysis of the re-emergence of Plasmodium vivax malaria in Japan using a stochastic transmission model

Description

Type of distribution

Mean

Variance

Range

 

Assumed values

 

 Frequency of mosquito bites

Poisson

0–3 bites/human/night (depending on Anopheles sinensis density)

June–September

 

 Diagnostic period

Gamma

20 (days)

52 (day2)

15–25 (days)

 

Description

Type of distribution

Mean

Variance

Range (days)

References

Estimated values

 Period of sporozoite formation

Gamma

9–17 (days) (depending on temperature)

22 (day2)

7–19

[23]

 Daily survival rate of mosquitoes

Bernoulli

71–87 (%) (depending on season)

[24]

 Ratio of primary infection

Bernoulli

Primary: 20 (%) (relapse: 80 (%))

[26]

 Incubation period in primary infection

Gamma

8 (days)

22 (day2)

6–10

[25]

 Relapse pattern of hypnozoites

Bernoulli

Short: 34 (%) (long: 66 (%))

[18]

 Relapse period (short)

Exponential

52 (days)

522 (day2)

30–120

[18]

 Relapse period (long)

Log-normal

293 (days)

592 (day2)

120–510

[18]

 Rate of gametocyte acquisition per day

Bernoulli

2.8 (%/days)

[28]

 Loss of infectivity

Gamma

19 (days)

8.32 (day2)

0–40

[27]