How Do H. diminuta and H. nana Infect Hosts?

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SUMMARY

The discussion focuses on the infection mechanisms of the parasites Hymenolepis diminuta and Hymenolepis nana. It is established that H. diminuta infects hosts primarily through the ingestion of infected arthropods, such as fleas, which can be consumed by rats or humans. Additionally, H. nana can infect humans through the consumption of food contaminated with rat feces containing the parasite's eggs. The conversation clarifies that ingestion is the primary route of infection for both parasites.

PREREQUISITES
  • Understanding of parasitic life cycles, specifically Hymenolepis species.
  • Knowledge of transmission routes for zoonotic diseases.
  • Familiarity with food contamination and hygiene practices.
  • Basic concepts of rodent behavior and diet.
NEXT STEPS
  • Research the life cycle and transmission methods of Hymenolepis diminuta.
  • Study the epidemiology of Hymenolepis nana infections in humans.
  • Explore food safety practices to prevent contamination from rodent feces.
  • Investigate the role of fleas and other arthropods in the transmission of zoonotic parasites.
USEFUL FOR

Parasitologists, public health professionals, food safety experts, and anyone involved in zoonotic disease prevention and control.

sameeralord
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Hello everyone,

H_diminuta_LifeCycle.gif


This is the life cyle of H.diminuta. My question is the 4th point. It says ingestion of these arthropods/fleas by rats or humans. Do rats actually eat these fleas, or do the fleas live on rats's skin and suck their blood and via that infects rats, same for humans. Is it ingestion or do these fleas live on the skin of these individuals?

H_nana_LifeCycle.gif


This is H.nana. My question is about 1st point. Can humans get infected by eating infected eggs of rats, which are passed in their faeces?

Thanks :smile:
 
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sameeralord said:
This is the life cyle of H.diminuta. My question is the 4th point. It says ingestion of these arthropods/fleas by rats or humans. Do rats actually eat these fleas, or do the fleas live on rats's skin and suck their blood and via that infects rats, same for humans. Is it ingestion or do these fleas live on the skin of these individuals?

While brown rat diet largely consists of grain, they are omnivores and have been known to eat insects. Yes it is only ingestion through which the parasite enters the body. Humans usually accidentally ingest the insects via uncooked or contaminated food.

sameeralord said:
This is H.nana. My question is about 1st point. Can humans get infected by eating infected eggs of rats, which are passed in their faeces?

Yes they can, due to food contamination (similar to how cholera spreads); and I think you mean the parasite eggs.
 


Thanks mishra :smile:
 

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