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.
In addition to live, attenuated vaccines, the immunization schedule includes vaccines of every other major typeâsee the table above for a breakdown of the vaccine types on the recommended childhood schedule.The different vaccine types each require different development techniques.uman papillomavirus (HPV). Live, attenuated vaccines currently recommended as part of the U.S. Childhood Immunization Schedule include those against measles, mumps, and rubella (via the combined MMR vaccine), varicella (chickenpox), and influenza (in the nasal spray version of the seasonal flu vaccine).