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Salmonella enterica subsp. enterica serovar Paratyphi A (antigenic formula: 1,2,12,a:[1,5]) is a serovar of the O:2 (A) serogroup. 

Serovar Paratyphi A, is one of the typhodial Salmonella serovars that leads to approximately 3.4 million cases and 19,100 deaths annually worldwide. This serovar mainly causes paratyphoid fever whose symptoms closely resemble those of Salmonella that cause enteric fever and incidence of Paratyphi A causing enteric fever have been increasing in recent years, especially in developing countriestyphoid fever, which is caused by Salmonella Typhi. Similar to typhoid, paratyphoid is endemic in low- and middle-income regions, particularly South Asia, accounting for 5–25% of enteric fever cases, primarily due to fecal contaminated water, food, and poor sanitation.

NCBI PD link for serovar Paratyphi A: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Paratyphi%20A%22)

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Recalls: There have been no recent recalls linked to this serovar. 

Relevant Links:

1. https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(18)30685-6/fulltext
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC8609278/
3. https://www.sciencedirect.com/science/article/abs/pii/B9780128225219000319
4. https://pubmed.ncbi.nlm.nih.gov/37274527/
5. https://www.sciencedirect.com/science/article/pii/S0255085720301511?ref=pdf_download&fr=RR-2&rr=9426415809c0fbfb
6. https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0003859
7. https://pubmed.ncbi.nlm.nih.gov/24198224/
8. https://pmc.ncbi.nlm.nih.gov/articles/PMC6528785/
9. https://pubmed.ncbi.nlm.nih.gov/8714142/

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