GIARDIA MEDLINEPLUS MEDICAL ENCYCLOPEDIA SKIP NAVIGATION NATIONAL LIBRARY OF MEDICINE HEALTH TOPICS DRUGS TOOLS MEDLINEPLUS SHOW SEARCH SITE MAP FAQS CUSTOMER SUPPORT YOU ARE HERE MEDICAL ENCYCLOPEDIA INFECTION SHARING FEATURES PLEASE GIARDIASIS TINY PARASITE GIARDIA LAMBLIA CAUSES LIVES CONTACT ANIMAL HUMAN WASTE INFECTED EXPOSED FAMILY MEMBER WATER LAKES STREAMS ANIMALS BEAVERS DOMESTIC LEFT FOOD CONTAMINATED DIRECT DAYCARE CARE NURSING HOMES PEOPLE UNPROTECTED ANAL AT RISK HIKERS DRINK SYMPTOMS BECOMING 14 DAYS DIARRHEA GAS LOSS BODY CONTINUE THE INFECTION EXAMS DONE STOOL ANTIGEN TEST CHECK PARASITES MILD INFECTIONS AWAY ON THEIR OWN MEDICINES DO NOT WORK IN DAYCARE CENTER NURSING REDUCE SPREAD CHANGE TYPE ANTIBIOTIC TRIED SIDE EFFECTS USED TO TASTE REACTION PREGNANT WOMEN SHOULD START HARMFUL UNBORN BABY COMPLICATIONS FLUIDS ABSORPTION NUTRIENTS INTESTINAL TRACT MEDICAL PROFESSIONAL CALL YOUR HEALTH CARE PROVIDER LAST BLOOD PURIFY DRINKING IODINE WORKERS CENTERS GOOD HANDWASHING HYGIENE TECHNIQUES GOING CHILD PERSON TO PERSON SEXUAL PRACTICES DECREASE RISK ANAL SEX WASH FRESH FRUITS VEGETABLES EATING NAMES IMAGES DIGESTIVE SYSTEM INSTITUTIONAL REFERENCES DUPONT APPROACH THE PATIENT ENTERIC CECIL 25TH ELSEVIER SEARS INFECTIOUS ENTERITIS PROCTOCOLITIS BACTERIAL FOOD POISONING BRANDT GASTROINTESTINAL LIVER DISEASE HILL MALABSORPTION DEHYDRATION WEIGHT LOSS PATIENT DOCTOR ADULT REVIEW DATE ASSISTANT PROFESSOR HARVARD MEDICAL SCHOOL ASSISTANT DIVISION DEPARTMENT OF MEDICINE MASSACHUSETTS GENERAL HOSPITAL DAVID ISLA EDITORIAL RELATED BROWSE ALSO KNOWN AS THE AMERICAN ACCREDITATION HEALTHCARE COMMISSION PROGRAM INDEPENDENT AUDIT VERIFY RIGOROUS STANDARDS QUALITY DISTINCTION ONLINE HEALTH INFORMATION LEARN PROCESS PRIVACY POLICY MEMBER PRINCIPLES THE HEALTH ON THE NET FOUNDATION THE INFORMATION MEDICAL EMERGENCY DIAGNOSIS MEDICAL CONDITION LICENSED PHYSICIAN MEDICAL CONDITIONS CALL 911 FOR ALL MEDICAL EMERGENCIES LINKS INFORMATION COPYRIGHT DUPLICATION COMMERCIAL MUST AUTHORIZED WRITING ADAM EMAIL UPDATES FOLLOW US DISCLAIMERS PRIVACY GUIDELINES PLAYERS CONNECT ROCKVILLE PIKE MD 208 DEPARTMENT OF HEALTH AND HUMAN NATIONAL INSTITUTES OF HEALTH PAGE