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Influenza is difficult to control from year to year primarily due to the virus's high mutation rate, which leads to antigenic drift and shift. These genetic changes can alter the virus's surface proteins, making it less recognizable to the immune system, including responses from previous infections or vaccinations. Additionally, the virus can infect a wide range of hosts, including birds and pigs, facilitating the emergence of new strains. This variability requires annual updates to vaccines, complicating efforts to achieve widespread immunity.
What else can I help you with?
Why is it impractical to include influenza vaccinations in the required childhood vaccinations?
There are many different strains of influenza. This is why you get a flu shot (or could) every year. So making a required vaccine would only protect the child for that one year.
Why is malaria so difficult to control?
Malaria is so difficult to control because it is being spread through mesquitos. It is hard to control if a bug were to bite a person, especially in a country that has so much poverty and cannot afford nets or proper bug sprays.
What year was Edward born and changed?
He was born in Chicago in 1901, and then in 1918 he was dying of Spanish Influenza, so Carlisle changed him.
Why was it so difficult to abolish slavery without more federal control?
Give me the answer
Why is influenza so bad?
Influenza (flu) can be from moderate to serious. So some influenza may cause some serious harm to your body. But others may already be in your immune system so you would react to it differently than others.
How do you define fury?
Fury is anger so powerful that a person finds it difficult to control.
Explain why viruses are so difficult to combat?
Viruses are so difficult to combat because they are very good at assuming control of cells and multiplying themselves to spread and produce toxins.
What do you have a another of when you have the flu?
Influenza is a virus, so you have a virus.
Why is tuberculosis so difficult to control?
Antibiotic-resistant strains of tuberculosis are on the rise.
Why is flying at hypersonic speed so difficult?
flying at hypersonic speed is difficult because when you are flying at hypersonic speed it gets difficult to keep track of where you are going, so you might crash.:) PEACE OUT Also it is so fast it is hard to control and hard to see.
Why are people consider to be the most difficult variable to control?
Controlling is the is not so much difficult to manage it properly your prevoius step should be done comprehensibly ..
How many day can you live if you have influenza?
Generally, influenza is not lethal, so you will probably live as long as you would gave done without it.
