Viral screening checks for the presence of minute infection causing virus which are not visible to the naked eye. Virus multiple and replicate at a rapid rate inside the living bodies. Virus comes in various shapes and varying sizes. Its interesting to know that virus cannot be treated by using antibiotics. However there are medications and drugs available which can restrict the virus from entering into cells or preventing them from multiplying.Semen analysis is a basic test done to evaluate the sperm count in the given semen. If the sample has sperm count less than 15 million per ml, its categorized as low sperm count. In such situations where males have less to low sperm count, your doctor might suggest appropriate treatments and medications overcome infertility issues.