Are there any DNA viruses?

Are there any DNA viruses?

DNA viruses are divided into three major categories: double-stranded DNA viruses (eg, poxviruses), single-stranded DNA viruses (eg, parvoviruses), and pararetroviruses (eg, hepadnaviruses) which replicate their genome through an RNA intermediate.

Are RNA viruses curable?

There are virtually no antiviral drugs available for the treatment of infections with RNA viruses. This is particularly worrisome since most of the highly pathogenic and emerging viruses are, and will likely continue to be, RNA viruses.

Is RNA or DNA virus worse?

RNA viruses generally have very high mutation rates compared to DNA viruses, because viral RNA polymerases lack the proofreading ability of DNA polymerases. The genetic diversity of RNA viruses is one reason why it is difficult to make effective vaccines against them.

Which virus is an RNA virus?

1.1. RNA Viruses. Human diseases causing RNA viruses include Orthomyxoviruses, Hepatitis C Virus (HCV), Ebola disease, SARS, influenza, polio measles and retrovirus including adult Human T-cell lymphotropic virus type 1 (HTLV-1) and human immunodeficiency virus (HIV).

Are giant viruses alive?

Viruses might not be alive, but they may be altering life on a global scale. Researchers have found that a bizarre group of microbes known as “giant viruses” contain genes associated with metabolism, which they likely use to convert their zombified hosts into supercharged energy factories.

What disease has no cure?

Some of the common medical conditions of people requiring care at the end of life include:

• cancer.
• dementia, including Alzheimer’s disease.
• advanced lung, heart, kidney and liver disease.
• stroke and other neurological diseases, including motor neurone disease and multiple sclerosis.
• Huntington’s disease.
• muscular dystrophy.

Which virus has the highest mutation rate?

RNA viruses have high mutation rates—up to a million times higher than their hosts—and these high rates are correlated with enhanced virulence and evolvability, traits considered beneficial for viruses.

What’s the biggest virus ever?

Mimivirus
Mimivirus is the largest virus ever discovered. Giant viruses had been known for a few years, many of them in a group termed nucleo-cytoplasmic large DNA viruses (NCLDVs).

What is the largest human virus?

Giant Mimivirus
Mimivirus is the largest and most complex virus known.

What is the baddest disease?

The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed. Untreated CAD can lead to chest pain, heart failure, and arrhythmias.

What is the chance of coronavirus mutating?

For SARS-CoV-2, scientists estimate that one mutation becomes established in the population every 11 days or so. But this process may not always happen at a steady pace.