Tag: infectious diseases - transmission and prevention

Some vaccines contain live, attenuated (weak or inactivated) microorganisms. Although most attenuated vaccines are viral, some are bacterial in nature. Examples include the viral diseases yellow fever, measles, rubella, and mumps, and the bacterial disease typhoid. The live Mycobacterium tuberculosis vaccine contains a virulently modified strain called BCG used to elicit an immune response to the vaccine. The live attenuated vaccine-containing strain Yersinia pestis is used for plague immunization. Rather than introducing an inactivated or attenuated micro-organism to an immune system, a fragment of it (protein subunit) can create an immune response. Examples include the subunit vaccine against hepatitis B virus that is composed of only the surface proteins of the virus, the virus-like particle (VLP) vaccine against human papillomavirus (HPV) that is composed of the viral major capsid protein. 

A vaccine is a biological preparation which provides active acquired immunity to a particular disease. A vaccine contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it and keep a record of it so that the immune system can more easily recognize and destroy any of these microorganisms that it later encounters.

The only available is BCG.
Children it decreases the risk of getting the infection by $20$% and the risk of infection turning into disease by nearly $60$%. tuberculosis is a communicable disease.

Many people could still be at risk of getting a particular disease example polio. This includes those people who have never had the vaccine, those who didn't receive all doses of the vaccine, or those traveling to areas of the world where polio is still prevalent. Therefore, (d) is the correct answer.

Vaccines stimulate the body's own immune system to protect the person against subsequent infection or disease. As vaccines contains heat killed microbes which are able to stimulate immune system. Therefore, (d) is the correct answer.

• Vaccines are the suspension of weakened or killed microorganism which generates the immune response. 
• It provides active acquired immunity to a particular disease. It is important for both, adults and children, as they can protect us from the many diseases.
  
  

Vaccines are suspensions of killed or weakened microbes or products or derivatives of micro organisms. A vaccine produces immunity to a disease by stimulating the production of antibodies. So, it is always useful.

Vaccines are suspensions of killed or weakened microbes or products or derivatives of micro organisms. A vaccine produces immunity to a disease by stimulating the production of antibodies.

These days vaccines are made on a large scale from micro organism to protect humans, animals and plants from several diseases.

A vaccine can be defined as a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened (attenuated) or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and keep a record of it, so that the immune system can more easily recognize and destroy any of these micro-organisms that it later encounters.