Porches cost a median of $67 per square foot, but vary from $20 to $85. These high end prices include all sorts of special lighting, and other perks. The materials for decking are about $5 per square foot, and average installation plus materials is about $20.he average custom home building costs for custom homes built in the United States is right around $83 per square foot. The median price however was $78 per square foot.
Two main types of HIV vaccines are currently being tested -- preventive and therapeutic. Preventive HIV vaccines: 1  Are tested in people who are HIV-negative. 2  Train the immune system to recognize and fight off HIV before it can establish infection and make the person sick.
Of the 47 different adenovirus species, only a few commonly cause illness in humans; it is thus possible to prepare a vaccine against these viruses. Vaccines include a first-generation inactivated vaccine against several adenovirus types and a non-attenuated oral vaccine against adenovirus types 4 and 7.