Of the viruses that cause a cold.

Causes of Colds Most viruses that trigger colds have become contagious and are transmitted from individual to individual. Of the viruses that cause a cold, the most commonly occurring subtype is a group that lives in the nasal passages known as the rhinovirus. Other less common cold viruses include coronavirus, adenovirus, and respiratory syncytial virus .Cold viruses may spread through the air flow and can be transmitted from airborne droplets expelled when somebody with a cold coughs or sneezes.The principal means of spreading a cold is through hand-to-face or -mouth contact or from objects which have been touched by someone with a cold, or by touching items where droplets produced by coughs or sneezes have recently landed and touching the face or mouth.The normal transmission occurs whenever a cold sufferer rubs his or her nose and then, thereafter shortly, shakes or touches hands with somebody who, subsequently, touches their own nose, mouth, or eyes.Virus transmission also often occurs via frequently shared or touched objects such as for example doorknobs and additional hard surfaces, handrails, grocery carts, telephones, and computer keyboards..Researchers has concluded that, while there may be transient short-term effects, the procedure itself does not cause late or permanent neurological effects probably. The authors of the review Ola Selnes, Ph.D., professor of neurology at Johns Hopkins Medical center in Baltimore, Guy and Maryland M. McKhann, M.D., also of Johns Hopkins, say that the late cognitive declines observed in some long-term studies are most likely to be associated with the progression of underlying conditions such as for example cerebrovascular disease rather than the surgery itself.