From General Travel Health:
Common Colds: A Common Problem
Catching a cold is certainly not the worst health problem a traveler can experience but it's one of the most common and can throw a monkey-wrench into a carefully planned business trip. Viral respiratory illnesses are second only to Travelers' Diarrhea as the most common cause of infection among travelers. Adults generally experience 3-4 such illnesses per year, which in turn account for 30-50% of lost time from work.

   From Student Travel Health:
Psychological Effects of International Study
In 1895, after spending time in Venice, Florence, and Rome, Sigmund Freud wrote to a colleague:
"Italy has captured me with the magical delirium of its wonders...this journey is also and above all a journey into my inner world, a discovery of myself."
Those who study, live, or travel in outside of their home countries often must cope with such overwhelming emotions, which Freud aptly describes as "a discovery".


   From Business Travel Health:
Jet Lag -- New Approaches to an Old Problem
Although the ease of international travel has increased, jet lag remains a common problem. A study by The Upjohn Company reported that 94% of long-haul travelers experience it, while another survey found that 9 out of 10 flight attendants complain of jet lag, despite their familiarity with international travel. The symptoms are well known: fatigue, insomnia and poor concentration. Travelers often report that they're exhausted but can't sleep--truly one of life's most frustrating experiences. The problem arises typically when you travel through three or more time zones and complete recovery can take 3 to 7 days for westward travel, and 5 to 14 days after an eastward flight.

   From Expatriate Travel Health:    
Preparing for a Healthy Overseas Assignment
Of the many goals that expatriates, accompanying family members, and employers have for an international assignment, none is more important than having a safe and healthy experience both abroad and upon repatriation. As with any business objective, the key is careful preparation, in this case oriented to health and safety.

   From Special Needs Travel Health:     
Traveling with HIV Disease
Patients with HIV disease who travel abroad may encounter some unique risks. Some pre-travel vaccinations may be inappropriate for HIV positive travelers. The risk of acquiring infections abroad may be higher. Some countries also have discriminatory policies towards HIV positive travelers that may make entrance to the country difficult.