Common examples of contagious viral diseases include the flu, the common cold, HIV, and herpes. Other types of viral diseases spread through other means, such as the bite of an infected insect.

The Top 10 Worst Computer Viruses in History

1. 10 worst computer viruses in history.
2. Mydoom – $38 billion.
3. Sobig – $30 billion.
4. Klez – $19.8 billion.
5. ILOVEYOU – $15 billion.
6. WannaCry – $4 billion.
7. Zeus – $3 billion.
8. Code Red – $2.4 billion.

Multipartite Virus – A virus which can attack both, the boot sector and the executable files of an already infected computer is called a multipartite virus. File Infector Virus – As the name suggests, it first infects a single file and then later spreads itself to other executable files and programs.

• Boot sector virus. This type of virus can take control when you start — or boot — your computer.
• Web scripting virus. This type of virus exploits the code of web browsers and web pages.
• Browser hijacker.
• Resident virus.
• Direct action virus.
• Polymorphic virus.
• File infector virus.
• Multipartite virus.

Antivirus is a software utility program designed to protect a system from internal attacks from viruses, trojan horse, spyware and so on. The main function of an antivirus is to scan, detect, prevent and remove any existential threat to the computer system. Examples: Norton, McAfee and Kapersky.

How do viruses spread? Once a person is infected with a virus, their body becomes a reservoir of virus particles which can be released in bodily fluids – such as by coughing and sneezing – or by shedding skin or in some cases even touching surfaces.

Viruses can be transmitted in a variety of ways. Some viruses can spread through touch, saliva, or even the air. Other viruses can be transmitted through sexual contact or by sharing contaminated needles. Insects including ticks and mosquitoes can act as “vectors,” transmitting a virus from one host to another.

But you can find relief faster with these smart moves.

1. Take it easy. When you’re sick, your body works hard to fight off that infection.
2. Go to bed. Curling up on the couch helps, but don’t stay up late watching TV.
3. Drink up.
4. Gargle with salt water.
5. Sip a hot beverage.
6. Have a spoonful of honey.

The four types of microbes that cause illness in people are bacteria, fungi, viruses, and parasites.

Infections are common. From ear infections and the flu to COVID-19, chances are we all have had at least one at some point. Viral, bacterial, fungal, and parasitic infections can all trigger sepsis.

Viruses are even smaller than bacteria and require living hosts — such as people, plants or animals — to multiply. Otherwise, they can’t survive. When a virus enters your body, it invades some of your cells and takes over the cell machinery, redirecting it to produce the virus.