Parasitology

Cyclospora cayetanensis

Cyclospora cayetanensis

The coccidian parasite Cyclospora cayetanensis was recently identified as a human intestinal pathogen. Schneider identified it in 1881, and Ashford reported it as a human infection in 1979. Cyclosporiasis, which is caused by ingestion of sporulated oocysts in contaminated food or water, has been identified as a primary source of substantial morbidity in both immunocompetent…

Trichomonas vaginalis

Trichomonas vaginalis

Trichomonas vaginalis is a parasite that can infect the urogenital systems of both men and women. It was initially discovered by Donne in 1836. The pathogenic parasite T. vaginalis causes vaginitis, urethritis, and prostatitis. T. vaginalis infection is frequently mistaken for a sexually transmitted disease. Freshly voided urine, prostatic secretions, and vaginal wet preparations from…

Enterobius vermicularis

Enterobius vermicularis

Due to its long-pointed tail, which resembles a straight pin in the adult worm, Enterobius vermicularis is called a pinworm. It is also known as ‘Seatworm’. It was originally called Oxyuris vermicularis, discovered by Linnaeus in 1758, and the condition was for several years referred to as oxyuriasis. In ancient Egyptian mummified human remains and…

Giardia Lamblia

Giardia Lamblia

Anton Von Leeuwenhoek (1681) discovered Giardia Lamblia (originally named Cercomonas intestinalis, later also known as Giardia intestinalis or Giardia duodenale) in his stools, making it one of the earliest known protozoan parasites. It is called Giardia after Paris Professor Giard and Lamblia after Prague Professor Lambl, who provided a detailed description of the parasite. It…

Entamoeba histolytica

Entamoeba histolytica

Amebic colitis, amebic dysentery, and extraintestinal amebiasis are some of common disease or disorder names. Humans are infected by this ameba. It can cause flask-shaped lesions and bloody diarrhea by infecting the mucosa of the colon.The trophozoite secretes lyticenzymes, which can spread to other tissues, including the liver, resulting in amebic ulceration. Despite the fact…