The many new airborne viral pathogens such as coronavirus (Covid-19), the novel variant (SARS-CoV-2), acute respiratory distress syndrome (ARDS), severe (SARS), and Middle East (MERS), have brought about a whole avalanche of problems. These are all highly contagious transmissible, especially in dental setting where procedures machinery used may generate enormous amounts aerosol spray. This is a...

OBJECTIVE To identify a strain of contagious ecthyma virus from goats that possesses the appropriate characteristics for an effective vaccine for goats. ANIMALS 25 goat kids used for vaccine development and 100 goat kids used for evaluation of vaccine efficacy. PROCEDURES 5 strains of contagious ecthyma virus were tested in a vaccination-challenge study to identify the best strain to be the...

Although cancer can on occasion be caused by infectious agents such as specific bacteria, parasites, and viruses, it is not generally considered a transmissible disease. In rare circumstances, however, direct communication from one host to another has been documented. The Tasmanian devil is now threatened with extinction in the wild because of a fatal transmissible cancer, devil facial tumor di...

Liljencrantz et al report the failure of observing contagious itch behavior using mice injected with histamine as the demonstrators. Analysis of their results shows that the histamine model is limited by inadequate frequency and duration of scratching bouts required for contagious itch test. To streamline the contagious itch test, the screen paradigm is highly recommended.