What are the advantages of live attenuated vaccines?

Advantages: Because these vaccines introduce actual live pathogens into the body, it is an excellent simulation for the immune system. So live attenuated vaccines can result in lifelong immunity with just one or two doses.

Are live attenuated vaccines effective?

Vaccines and Clinical Immunization

Live, attenuated vaccines are usually very effective, and a single dose is often enough to induce long-lasting immunity.

What are the advantages of using vaccines?

Vaccination protects the vaccinated persons and those around them who are vulnerable to the diseases, reducing the risk of diseases spreading among family members, school mates or colleagues, friends, neighbours and other people in the community.

What are the live attenuated vaccines?

The live, attenuated viral vaccines currently available and routinely recommended in the United States are MMR, varicella, rotavirus, and influenza (intranasal). Other non-routinely recommended live vaccines include adenovirus vaccine (used by the military), typhoid vaccine (Ty21a), and Bacille Calmette-Guerin (BCG).

What is the disadvantage of live poultry vaccine?


It is, however, a disadvantage in that, since an infection with a live virus is involved, this may result in clinical signs because of the innate virulence of the vaccine virus or by exacerbating other organisms that may be present, especially in the respiratory tract.

What is the major disadvantage of attenuated vaccines?

The major disadvantage of attenuated vaccines is that secondary mutations can lead to reversion to virulence and can thus cause disease. There is another possibility of interference by related viruses, as is suspected in the case of oral polio vaccine in developing countries.

How does a live attenuated vaccine work?

Live-attenuated vaccines

Live vaccines use a weakened (or attenuated) form of the germ that causes a disease. Because these vaccines are so similar to the natural infection that they help prevent, they create a strong and long-lasting immune response.

What is vaccine give advantages of oral vaccine?

Oral vaccination provides both social and economic advantages, especially in developing countries. The use of needle-free vaccine administration eliminates the risk of transmitting blood-borne pathogens and can be performed by health workers without any medical training.

What is the disadvantage of vaccine?

Vaccines do have some risk for adverse reaction, the most common being redness and soreness at the injection site or fever and allergic reactions.

What is vaccine give advantage of oral or edible vaccine?

Edible vaccines are well tolerated, as they do not require administration by injection unlike traditional vaccines. Thus, there is also a reduced need for medical personnel and risk of contamination is low. The feasibility of oral administration compared to injection is also an advantage.

What is the main advantage of vaccines over antibiotics?

Vaccines can help limit the spread of antibiotic resistance. The global increase in disease caused by drug-resistant bacteria, due to overuse and misuse of antibiotics, is a major public health concern. It is more difficult and costly to treat antibiotic-resistant infections and people do not always recover.

What are the disadvantages of edible vaccines?

Disadvantages of Edible Vaccines. There is the possibility of development of immunotolerance to the vaccine protein or peptide. Consistency of dosage form differs from plant to plant and generation to generation. Protein content varies from plant to plant and generation to generation.

What is banana vaccine?

Banana vaccines are made through a process which begins with an altered form of a virus being injected into a banana plant. The genetic material of the virus then becomes a significant and permanent part of the plant cells (Goldstein, 2007).

Is edible vaccine answer?

Edible vaccines are nothing but transgenic plant and animal-based production of or those contain agents that trigger an animal’s immune response. In simple, plant or animal-made pharmaceuticals are edible vaccines.

Is Golden Rice being used?

Golden Rice has been accepted as safe for consumption by the Governments of Australia, Canada, New Zealand and USA, and registrations have been applied for in Philippines and Bangladesh.

Are salmon genetically modified?

AquaBounty’s salmon is a genetic mixture of three different fish — Atlantic salmon, chinook salmon and the eel-like ocean pout. It grows twice as fast as its non-engineered counterparts, reaching full market size in 18 months. This is the first time a company has sold genetically engineered salmon in the U.S.

What is the advantage of growing GMO salmon?

The animals grow more quickly, using less feed so they are a sustainable option. The salmon is safe to eat and offers the nutritional benefits of omega 3 fatty acids. This is the first genetically modified animal food product and may be the first of many that will provide benefits for consumers.

Is tilapia a man made fish?

Yes, Tilapia is a real fish. It’s a common myth that the species is “man-made”—but that couldn’t be farther from the truth. While Tilapia is often raised in fish farms around the globe, the species is native to the Middle East and Africa. References to and drawings of Tilapia can even be dated back to ancient Egypt.

What would happen if the GM salmon escape to the wild?

If even a few GM salmon were to escape, wild salmon populations could disappear or be altered forever. If even a few GM salmon were to escape, wild salmon populations could disappear or be altered forever.

What are the two risks of GMOS?

It is known that the main concerns about adverse effects of GM foods on health are the transfer of antibiotic resistance, toxicity and allergenicity. There are two issues from an allergic standpoint.

Did the FDA approve GMO salmon?

The FDA has approved genetically engineered salmon for consumption. The FDA will not require AquAdvantage salmon to be labeled as genetically engineered. — — The U.S. Food and Drug Administration (FDA) announced today that it has approved the first genetically engineered animal intended for food: AquAdvantage salmon.

What are the disadvantages of genetically modified salmon?

The downside comes down to unknowns. The ones that experts have brought up include the potential for triggering allergies, and the concern that some of these fish might escape. If even a tiny fraction aren’t sterile, they could mix with other salmon and change the whole population in an irreversible way.

What are the pros and cons of GMOS?

The pros of GMO crops are that they may contain more nutrients, are grown with fewer pesticides, and are usually cheaper than their non-GMO counterparts. The cons of GMO foods are that they may cause allergic reactions because of their altered DNA and they may increase antibiotic resistance.

Why GM salmon is a health risk?

Studies have shown that there is a high risk for genetically engineered organisms to escape into the natural environment and that genetically engineered salmon can crossbreed with native fish.