On an average, healthy individuals carry about five types of viruses in their bodies and the same viruses that make us sick can take up residence in and on the human body without provoking a sneeze, cough or other troublesome symptom, says a significant study.
Using a new principle for analysing DNA sequence data, researchers have mapped 500 previously unknown micro-organisms in human intestinal flora as well as 800 unknown bacterial viruses which attack intestinal bacteria.
A survey conducted by information security firm Kaspersky Lab has reportedly revealed that there has been a 2.8-fold increase in new viruses targeting smartphones, tablet computers and other mobile devices this year.
MIT engineers have developed a new type of nanoparticle that protects the vaccine long enough to generate a strong immune response - not only in the lungs, but also in mucosal surfaces far from the vaccination site, such as the gastrointestinal and reproductive tracts.
Researchers have discovered the mechanism that enables CD4 helper T cells to assume the more aggressive role of killer T cells in mounting an immune attack against viruses, cancerous tumors and other damaged or infected cells.