Therefore, a given virus may be classified based on the type of genome it contains. For instance, the majority of plant viruses have been shown to contain a single strand of RNA (ssRNA). Depending on the type of virus, then, the genome may be single-stranded RNA (ssRNA), single-...
An acute disease is often caused by a virus, such as the common cold, or an injury, such as falling and breaking a bone. This type of disease may require specific treatment, as with a broken bone, or it may go away on its own as with a cold. On the other hand, a chronic ...
What type of cells does HIV attack? What are viruses? What are the different types of vaccines that are used? What is HIV? What are the modes of infection? What is a disease vector? Describe how the smallpox virus spread, what are the symptoms, and what is unique about the disease. ...
Vaccines have nearly eradicated several harmful infectious diseases such as polio, rubella (measles), pertussis (whooping cough), and varicella (chicken pox). Vaccinations are serums that contain a dead or weakened version of the disease-causing virus or ...
Ever since the first vaccine was developed in 1796 to treat smallpox,1 several different methods have been created to develop successful vaccines. Today, those methods, known as vaccine technologies, are more advanced and use the latest technology to hel
1997. Potential role of almond in sharka epidemics: susceptibility under controlled conditions to the main types of plum pox potyvirus and survey for natural infections in France. EPPO Bull. 27:539-46DALLOTS,., BOUSALEMM,., BOEGLINM, ., RENAuD, L.Y.& QUIOTJ,.B. (1997) Potential role...
There may be outbreaks or epidemics of highly contagious infections (e.g., influenza, respiratory syncytial virus, Streptococcus pyogenes) due to mass shelter- ing of children and families. Poor nutrition or decreased availability of food may lower their resistance against infections. Various water-...
Human T-cellleukemiavirus type1 (HTLV-1)-associated myelopathy.Also calledtropical spastic paraparesis (TSP),this type of spastic paralysis comes on gradually after an infection withHTLV-1. It causes symptoms that are similar to MS, but it happens in less than 3% of people infected with the ...
Viruses are simple, non-cellular entities consisting of one or more molecules of either DNA or RNA enclosed in a coat of protein. Viruses are smaller than prokaryotic cells ranging in size from 0.02 to 0.3 micrometer. Smallpox virus is a large virus, at about 200 nm in diameter and ...
Risks of smallpox vaccination in patients with rashes People with atopic dermatitis or eczema should not be vaccinated against smallpox, whether or not the condition is active. Patients with atopic dermatitis are more susceptible to having the virus spread on their skin, which can lead to a seri...