The cycle of infection
The vaccine is an Australian discovery, by Professor Ian Frazer from the University of Queensland's Center for Immunology and Cancer Research (CICR). For 20 years, Professor Frazer has been researching the link between papilloma viruses and cancer, seeking ways to treat these viruses in order to reduce the incidence of cancer.
microorganisms such as bacteria and viruses
Yes. It is caused by viruses.
These diseases are caused by "viruses".
The two ways that viruses cause infection are by lytic infection and lysogenic infection. The virus can enter into a cell, make a copy of itself and the cause the cell to burst in a lytic infection. When a virus embeds its DNA into the DNA of a host cell and replicates, it is a lysogenic infection.
by spreading bacteria
To help reduce the incidence of child malnutrition.
The lytic cycle of infection occurs when more viruses are produced and the host cell is destroyed. This is the phenomenon that occurs in viral illnesses.
The lytic cycle of infection occurs when more viruses are produced and the host cell is destroyed. This is the phenomenon that occurs in viral illnesses.
In infection control, the term "disease" refers to a pathological condition caused by an infectious agent, such as bacteria, viruses, or fungi, that disrupts normal bodily functions. It encompasses the clinical manifestations and symptoms experienced by an individual as a result of the infection. Effective infection control measures aim to prevent the transmission of these infectious agents, thereby reducing the incidence of disease in populations. The focus is on both preventing infections and managing outbreaks to protect public health.
The number of viruses needed to cause an infection can vary widely depending on the virus and the individual's immune response. For some viruses, a very low infectious dose—sometimes as few as one to ten viral particles—can initiate an infection. In contrast, other viruses may require a larger dose to overcome the host's defense mechanisms. Overall, the specific threshold for infection depends on factors such as the virus's virulence and the host's susceptibility.