Describe eggs of schistosoma haematobium???

The eggs of Schistosoma haematobium, also known as urinary schistosomiasis, are oval-shaped and measure about 110-170 micrometers in length and 40-70 micrometers in width. They have a characteristic spine at one end, which helps in their identification.

The eggs are produced by adult female schistosomes residing in the blood vessels surrounding the urinary bladder and reproductive organs of the infected individual. These eggs are released into the urine or feces of the host and can contaminate freshwater sources, such as rivers and lakes.

Once the eggs are released into the water, they hatch, releasing miracidia, which are free-swimming larvae. These miracidia then seek out specific freshwater snails, which act as intermediate hosts for the parasite. Inside the snail, the miracidia undergo several developmental stages, eventually transforming into cercariae.

The cercariae are the infective stage of the parasite and are released from the snail into the water. They can penetrate the skin of humans who come into contact with contaminated water during activities like swimming, bathing, or washing clothes. Once inside the human host, the cercariae migrate through the bloodstream to reach the urinary system, where they mature into adult worms.

It is important to note that the eggs of Schistosoma haematobium are responsible for the pathology associated with urinary schistosomiasis. When the eggs become trapped in the tissues of the urinary system, they elicit an immune response, leading to inflammation, fibrosis, and damage to the affected organs, such as the bladder, ureters, and kidneys.