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NCBI PD link for serovar Paratyphi A: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22%20)%20AND%20serovar:(%22Ouakam%22%20%22Salmonella%20enterica%20subsp.%20enterica%20serovar%20Ouakam%22%20%22Salmonella%20Ouakam%22%20%22Paratyphi%20A%22%20%22Salmonella%20Paratyphi%20A%22)
Genetic characteristics:
Paratyphi A isolates have been found to be resistant to flouroquinolones. A few isolates have been shown to be resistant to azithromycin.
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Serovar Paratyphi A is found worldwide, primarily in middle- and low-income countries like Pakistan, Nepal, India, and Bangladesh. However, it has also been found in Europe, Africa, and the Americas.
Outbreaks:
Border rejections:
Recalls:
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Human outbreaks:
Year | Location | Associated source | Number of cases |
|---|---|---|---|
| 2014 | India | Not identified1 | 43 |
| 2010-2011 | China | Uncooked vegetables irrigated with contaminated water | 601 |
| 2009 | Israel | Kosher food venue2 | 37 |
| 2004 | China | Unboiled water3 | 394 (suspected) |
| 1995 | India | Vegetarian food4 | 33 |
1 An unusual Salmonella Paratyphi A variety durazzo (2,12:a:-) was associated with this outbreak.
2 The outbreak involved 37 Israeli travelers to Nepal. All of them developed bacteremia.
3 Among 394 suspected cases, 95.5% of them were students.
4 An unusual Salmonella Paratyphi A variety durazzo (2,12:a:-) was associated with this outbreak.
Border rejections: There have been no recent border rejections linked to this serovar.
Recalls: There have been no recent recalls linked to this serovar.
Relevant Links:
- https://www.sciencedirect.com/science/article/pii/S0255085720301511?ref=pdf_download&fr=RR-2&rr=9426415809c0fbfb
- https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0003859
- https://pubmed.ncbi.nlm.nih.gov/24198224/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6528785/
- https://pubmed.ncbi.nlm.nih.gov/8714142/