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. 2020 Jun 23;17(12):4517. doi: 10.3390/ijerph17124517

Table 1.

Search strategy for the literature review.

Question Description Answer
No Yes/Cannot Tell
Level 1: Language
Q1 Is the paper written in English or French? 0 1
L1 = Q1; eligible for L1 = 1
Level 2: Title
Q1 Does the title mention West Nile terms? 0 1
Q2 Does the title mention bird terms? 0 1
Q3 Does the title mention a region of study that is concerned (East Coast USA and Canada)? 0 1
Q4 Does the title mention terms relate to sero-prevalence, prevalence, competence, capacity or transmission? 0 1
L2 = Q1 × Q2 (1 + Q3 + Q4); eligible for L2 ≥ 1
Level 3: Abstract
Q1 Does the abstract describe search results rather than a method? 0 1
Q2 Do the abstract mention terms related to bird mortality? 0 1
Q3 Do the abstract mention terms related to prevalence or sero-prevalence? 0 1
Q4 Does the abstract mention terms relate to host competence 1? 0 1
Q5 Does the abstract mention terms relate to host capacity 2? 0 1
Q6 Does the abstract specify the regions of study: states of the Eastern migratory corridor for the USA and Canada? 0 1
L3 = Q1 × Q6 × (1 + Q2 + Q3 + Q4 + Q5); eligible for L3 ≥ 1
Score = L1 × L2 × L3; eligible for score ≥ 1

1 The host competence designates the capability of a given bird species of being infected and developing a sufficient viremia for transmitting infectious agents to vectors [39]. 2 The concept of host capacity brings subtlety to the skill of the host. A competent bird species can only be involved in the transmission of the virus if it is sufficiently abundant and belongs to the species on which a mosquito competent for WNV feeds [34].