Travelers' diarrhea (TD) is the most common illness affecting travelers. Each year between 20%-50% of international travelers, an estimated 10 million persons, develop diarrhea. The onset of TD usually occurs within the first week of travel but may occur at any time while traveling, and even after returning home. The most important determinant of risk is the traveler's destination. High-risk destinations are the developing countries of Latin America, Africa, the Middle East, and Asia.

Most TD cases begin abruptly. The illness usually results in increased frequency, volume, and weight of stool. Altered stool consistency also is common. Typically, a traveler experiences four to five loose or watery bowel movements each day. Other commonly associated symptoms are nausea, vomiting, diarrhea, abdominal cramping, bloating, fever, urgency, and malaise. Most cases are benign and resolve in 1-2 days without treatment. TD is rarely life-threatening.

Infectious agents are the primary cause of TD. Bacterial enteropathogens cause approximately 80% of TD cases. The most common causative agent isolated in countries surveyed has been enterotoxigenic Escherichia coli (ETEC). ETEC produce watery diarrhea with associated cramps and low-grade or no fever. Besides ETEC and other bacterial pathogens, a variety of viral and parasitic enteric pathogens also are potential causative agents.

CDC does not recommend antimicrobial drugs to prevent TD. Studies show a decrease in the incidence of TD with use of bismuth subsalicylate and with use of antimicrobial chemoprophylaxis. Several studies show that bismuth subsalicylate taken as either 2 tablets 4 times daily or 2 fluid ounces 4 times daily reduces the incidence of travelers' diarrhea. The mechanism of action appears to be both antibacterial and antisecretory.

Potential travelers should consult with a doctor or a travel medicine specialist before departing on a trip abroad. Information about TD is available from your local or state health departments or the World Health Organization (WHO). Other information that may be of interest to travelers can be found at the CDC Travelers' Health homepage at http://www.cdc.gov/travel. Content source: Coordinating Center for Infectious Diseases / Division of Bacterial and Mycotic Diseases

Avoid eating foods or drinking beverages purchased from street vendors or other establishments where unhygienic conditions are present Avoid eating raw fruits (e.g., oranges, bananas, avocados) and vegetables unless the traveler peels them. If handled properly well-cooked and packaged foods usually are safe. Tap water, ice, unpasteurized milk, and dairy products are associated with increased risk for TD.

TD usually is a self-limited disorder and often resolves without specific treatment; however, oral rehydration is often beneficial to replace lost fluids and electrolytes. Clear liquids are routinely recommended for adults. Travelers who develop three or more loose stools in an 8-hour period---especially if associated with nausea, vomiting, abdominal cramps, fever, or blood in stools---may benefit from antimicrobial therapy. Antibiotics usually are given for 3-5 days.

Antimotility agents (loperamide, diphenoxylate, and paregoric) primarily reduce diarrhea by slowing transit time in the gut, and, thus, allows more time for absorption. Some persons believe diarrhea is the body's defense mechanism to minimize contact time between gut pathogens and intestinal mucosa. In several studies, antimotility agents have been useful in treating travelers' diarrhea by decreasing the duration of diarrhea.

CDC, in collaboration with the World Health Organization and several Ministries of Health, is working to improve food and water safety around the world. CDC also investigates risk factors associated with acquisition of TD, to assist in identifying more effective preventive measures. CDC continues to monitor antimicrobial resistance in other countries and in the United States.

When the intestines are functioning normally, food and fluid pass from the stomach into the small intestine and then into the colon. Cells that line the small intestine and colon absorb the nutrients and water the body needs from the food. The remaining food material, in the form of stools, enters the rectum for elimination. Sometimes, the cells become irritated and cannot properly absorb the water and nutrients from the food.

In the BR.21 NSCLC clinical trial, Grade 3/4 diarrhea occurred in 6% of patients. One percent of patients needed dose reduction and 1% of patients discontinued treatment due to diarrhea. Diarrhea can usually be managed with loperamide. Patients with severe diarrhea who are unresponsive to loperamide or who become dehydrated may require dose reduction or temporary interruption of therapy. For patients with severe diarrhea who become dehydrated, consider treatment with oral rehydration therapy.

Diarrhea is the sudden increase in the frequency of bowel movements associated with an increase in the water content of the stools. It is more serious if the stools are bloody and/or frequent (over 10 per 24 hours) and associated with fever over 102. When occurring with vomiting, dehydration may occur at an earlier stage. Infants under 1 year are more prone to dehydration at an earlier stage. Over 90% of acute diarrhea is caused by an intestinal virus.

During the teething period the baby is restless and there is an itchy sensation in the mouth. To curb this irritation the baby tends to chew on various objects which may be unclean. In such cases bacteria travel within the baby's body through the oral cavity. This most frequently leads to diarrhea.

No. Over-the-counter medicines work fine and we keep those in our fully stocked first aid kit that we have with us at all times.