Table 4 Bacterial species of Gram-negative bacteria isolated from highly contaminated water samples of mobile handwashing stations (mHWS)

Enterobacterales (n = 109)

Klebsiella pneumoniae* + K. oxytoca*

36 + 3

Enterobacter cloacae* + E. cloacae complex

5 + 20

Citrobacter freundii + C. freundii complex

11 + 2

Aeromonas hydrophila*

11

Enterobacter bugandensis

4

Enterobacter sp.

1

Serratia marcescens*

4

Morganella morganii

3

Phytobacter ursingii

1

Providencia alcalifaciens + P. rettgeri

1 + 1

Escherichia coli

1

Pantoea dispersa

1

Citrobacter koseri

1

Salmonella salamae

1

Kluyvera ascorbata

1

No species Identification

1

Pseudomonas aeruginosa (n = 37)

Pseudomonas aeruginosa*

37

Non-fermentative Gram-negative bacteria other than Pseudomonas aeruginosa (n = 72)

Pseudomonas alcaligenes

9

Pseudomonas mendocina

1

Pseudomonas otitidis

1

Pseudomonas sp.

7

Pseudomonas stutzeri

6

Pseudomonas putida*

1

Pseudomonas putida group

2

Stenotrophomonas maltophilia*

12

Comamonas aquatica

7

Comamonas testosteronii

1

Comamonas sp.

3

Chromobacterium violaceum

2

Alcaligenes faecalis*

2

Burkholderia cepacia complex*

3

Acinetobacter baumannii*

4

Acinetobacter bereziniae

1

Acinetobacter johnsonii

1

Acinetobacter junii

1

Acinetobacter nosocomialis

2

Acinetobacter seifertii

1

Brevundimonas vesicularis

1

Shewanella xiamenensis

2

No species Identification

2

Total

218