Question: Why Is Influenza A Public Health Issue?

Does influenza cause a disease?

Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs.

It can cause mild to severe illness, and at times can lead to death.

The best way to prevent flu is by getting a flu vaccine each year..

What is the most common cause of influenza?

What Causes the Flu? The flu is caused by influenza viruses that infect the nose, throat, and lungs. These viruses spread when people with flu cough, sneeze or talk, sending droplets with the virus into the air and potentially into the mouths or noses of people who are nearby.

Why isn’t the flu considered a pandemic?

An influenza pandemic is a global outbreak of a new influenza A virus. Pandemics happen when new (novel) influenza A viruses emerge which are able to infect people easily and spread from person to person in an efficient and sustained way. The United States is NOT currently experiencing an influenza pandemic.

When was last pandemic in history?

The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. Although there is not universal consensus regarding where the virus originated, it spread worldwide during 1918-1919.

Can you have the flu without a fever?

Colds don’t usually come with a significant fever And while you can still have the flu without a fever, the flu typically comes with a few days above 100°F. A flu fever will likely come on fast.

Why is Influenza A problem?

Due to the lack of immunity in humans against the new virus, serious epidemics can be provoked resulting in high morbidity and mortality rates. Historically, influenza pandemics are a result of the transmission of the virus from birds to humans, or the transfer of such genes to seasonal influenza.

Can the flu damage your heart?

Flu is a respiratory illness and because of that, patients can develop problems with appropriate oxygen levels, which can affect every organ in the body, including the heart. It can especially take a toll on the heart if you already have heart problems.

How do you know your body is fighting a virus?

A sore, scratchy throat signals that white blood cells and antibodies are rushing to the area to fight infection – causing inflammation and irritation. A sore throat that just won’t quit is usually a good indication that your body is fighting a virus and may need a little bit more tender loving care than usual.

At what temperature does flu virus die?

By contrast, influenza viruses, which infect the whole body, grow best at temperatures slightly below body temperature, and at 40° C they will die off after 12-24 hours.

What flu is going around 2020?

Influenza B Strain Dominating Early in the 2020 Flu Season.

Is the flu a reportable illness?

Also, flu illness is not a reportable disease and not everyone who gets sick with flu seeks medical care or gets tested. CDC uses mathematical modeling in combination with data from traditional flu surveillance systems to estimate the numbers of flu illnesses in the United States.

How long do flu epidemics last?

It is estimated that pandemic flu will be widespread in the UK within about ten weeks of its first arriving, and will last for about three months. There may be a second wave of infection a few months later. These times are estimates, and may change.

What kills the flu virus in the body?

A fever kills the virus by making your body hotter than normal. That also helps germ-killing proteins in your blood get where they need to be more quickly.

What organs does the flu affect?

Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs.

What virus causes influenza A?

Human influenza A and B viruses cause seasonal epidemics of disease (known as the flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics, i.e., global epidemics of flu disease.