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The most prevalent cancer diagnosed in the world is sunlight-induced skin cancer. In addition to being a complete carcinogen, UV radiation, the causative agent of skin cancer, induces immune suppression. Because UV-induced immune suppression is a well-recognized risk factor for skin cancer induction, it is crucial to understand the mechanisms underlying(More)
BACKGROUND Rifaximin has been shown to be effective in treating and preventing travelers' diarrhea (TD) during the summer season. METHODS The goal of this double-blinded multicenter trial was to assess the efficacy and safety of rifaximin 550 mg administered once daily for 14 days compared with placebo in the prevention of TD during the dry season in(More)
BACKGROUND Asthma affects >300 million people globally, including 25 million in the United States. Patients with asthma frequently use the Internet as a source of information. YouTube is one of the three most popular Web sites. OBJECTIVE To determine the educational quality of YouTube videos for asthma. METHODS We performed a YouTube search by using the(More)
BACKGROUND Up to 60% of the US visitors to Mexico develop travelers' diarrhea (TD). In Mexico, rates of diarrhea have been associated with the rainy season and increase in ambient temperature. However, the seasonality of the various diarrheagenic Escherichia coli pathotypes in travelers has not been well described. OBJECTIVE A study was undertaken to(More)
Penicillin allergy is the most commonly reported drug allergy in the United States. However, after undergoing a complete evaluation by a board-certified allergist, including skin testing, 90% of patients labeled as 'penicillin-allergic' are able to tolerate penicillin. Clinical presentation is key in classifying reactions as either mediated by or not(More)
A 40-year-old man with a previous AIDS-defining opportunistic infection and five negative HIV tests presented to our outpatient clinic. The laboratory test was relevant for less than 300 total lymphocytes on two separate occasions. He was diagnosed with idiopathic CD4 lymphocytopenia and was started on antibiotic prophylaxis for Pneumocystis carinii(More)
A 64-year-old female patient presented with a 16-year history of persistent dry cough that was undiagnosed after workups at several healthcare facilities. The patient denies wheezing, shortness of breath or sputum production. Previous workups include chest imaging, transthoracic echocardiogram (TTE), laryngoscopy, spirometry and bronchoscopy, all of which(More)