1.   That is why molecular studies designed to find the weak points in the viral attack must continue, Trono said.

2.   The immune system withers under the viral attack, leaving the body extremely vulnerable to other painful and life-threatening diseases.

3.   And many scientists believe that mutant forms of HIV can be weak or slow to replicate, enabling the immune system to dampen the viral attack.

4.   At any stage, the body can throw up a roadblock and slow or prevent the viral attack.

5.   He says airlines should give each passenger one liter of water to drink to ward off viral terrorist attacks.

6.   Plants under viral attack use a volatile version of aspirin to warn their neighbours of the danger of infection.

7.   They said it was believed to be caused by a strain of streptococcus-A bacteria that may have undergone genetic mutation through viral attack.