When the 26-year-old signed I'm proud of you, the president quickly signed back a Thank you. The exchange can be watched below. Obama had previously used his American Sign Language abilities on the campaign trail, reports Salon. But that was years ago, and many people didn't know about his skill until the March 15 video went viral. The deaf student, reports Distriction, was elated. Oh my gosh! he signed in a video later posted to YouTube.
Viral Sore Throat. More than half of all sore throats are caused by viruses (known medically as viral pharyngitis). They are often the same viruses that cause the common cold, flu, a sinus infection (sinusitis), or other upper respiratory tract infections. Rhinovirus infections appear to be the most common reason for a sore throat.
Up to 90 percent of all sore throat cases are caused by a viral infection and should improve within seven to 10 days. (iStockphoto) Sore throat (also called pharyngitis) is typically caused by a viral or bacterial infection. An estimated 200 to 300 different strains of virus cause colds and sore throat. In up to 90 percent of cases, sore throat is caused by viruses linked to the common cold or flu. The other 10 percent of cases result from bacterial infections or some other medical condition.