Which of the following statements about giardiasis is true?
A) Transmission occurs through fecal–oral contamination.
B) Chlorination of drinking water kills the cyst.
C) Diagnosis can be achieved by peripheral blood smears.
D) The cyst form is responsible for symptoms.
E) Asymptomatic carriers do not require treatment.
Answer and Discussion
The answer is A.
Giardia lamblia is the causative agent in parasitic giardiasis. Most cases are asymptomatic. However, these patients pass infective cysts and must be treated.
Symptoms occur 1 to 3 weeks after infection and include foul-smelling watery diarrhea, flatulence, abdominal cramps and distention, and anorexia.
Outbreaks in day schools, nursing homes, and institutions for the mentally retarded are common. Transmission is through a fecal–oral route.
The infective form is the cyst, and trophozoites are responsible for the symptoms. Cysts are transmitted in contaminated food or water. Giardia cysts are resistant to chlorination; therefore, filtration is used to clear cysts from drinking water supplies. Giardia is sensitive to heat, thus bringing water to a boil is effective before consumption.
Diagnosis is accomplished by detecting cysts or the parasite in the stool (usually three samples) or in duodenal contents (by using endoscopy, the swallowed-string test, or Enterotest).
Treatment includes metronidazole and furazolidone. The medication is available in suspension, making it useful for children. Close contacts should also be tested, especially when recurrent infections are found. Although Giardia is most commonly associated with beavers, there is evidence of sporadic transmission between infected dogs and people.
Hello, my name is Betty. i was diagnosed of HIV virus 4 years back. Before then, i was dating this Derrick guy. we had something great going on. Our love life only lasted for 8 months. the sixth and seven month of our relationship, i began feeling very weak every now and then. But i never suspected anything until I kept on experiencing different symptoms like having sore throats, constant headache, body weakness e.t.c. I decided to go for a medical check up. I was tested HIV positive. when the doctor broke the news to me, it was as if my whole world had crumbled. it dawned on me then that Derrick has been lying to me. i was very mad to an extent i almost committed suicide. But there was nothing i could do, other than weep and weep. ever since then, i have been spending heavily on medications, going from one medical clinic or the other so I can look healthy. Though since i was a kid, i love herbs a lot. i take herbal tea with grandma while growing so i am quite familiar with herbs. early last year, i was on the internet and on a particular health blog, to check for herbal medication as alternative. I saw many comments and read many testimonies. Until i came across a particular testimony on how Dr.ugo cured a patient from herpes simplex virus using pure natural herbs. i reached out to the doctor because I also was thinking Herpes had no cure. I told him about my HIV status.He encouraged me not to panic that he will help me get my deliverance. he prepared some herbs and sent them to me. The herbs were in four 70ml bottles and I took them morning and night. i used as he directed, and in less than three weeks, i started having appetite to eat plenty of food and i gained back my strength. the fourth week,I consumed all the herbal meds. He encouraged me to go for a test which i did. This time, the result was negative. I quickly contacted the doctor and informed him of the news. I immediately asked him to prepare for Derrick too. He did and sent it. Today, me and Derrick are HIV free. All thanks goes to God Almighty for healing us through Dr.Ugo. if you are having any kind of sickness at all, Dr.Ugo is the right person to talk to and i assure you, you will be glad you did. His email: ugoherbalhome@gmail.com you can also write him on WhatsApp +2348104990619.
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