Table 2 Scoring system for modified GRADE criteria.

PCR + laboratory + clinical + imaging

2

Culture, smear, histology

1

Clinical suspicion only

0

Patient sample size

Score

≥ 10

1

< 10

0

Year of study

Score

< 5 years

2

5–10 years

1

> 10 years

0

Country (data used)

Score

Zimbabwe

2

Any other African country

1

Rest of the world

0

Methodology (well designed)

Score

Yes

1

No

0

Type of publication

Score

Research paper

2

Case study/short reports

1

Review papers

0

Possible total score

10