2018 flu -how it runs iys course

What does the uncertainty interval tell us about the flu?

The uncertainty interval provides a range in which the true number or rate of flu illnesses, medical visits, hospitalizations, or deaths would be expected to fall if the same study was repeated many times, and it gives an idea of the precision of the point estimate.

When does flu season start&end?

Flu season generally peaks between December and February, and can sometimes stretch into May, says the CDC. (8) Most people get colds in the winter and spring, according to the CDC, but it’s possible to catch a cold in the summer or fall too. (1)

What is the latest CDC report on the flu?

CDC Flu Reports & Spotlights CDC Grand Rounds: Public Health Response to Severe Influenza Study Shows Flu Vaccine Reduces Risk of Severe Illness August 1, 2018 Influenza Division Staff Win Two Charles C. Shepard Awards June 14, 2018 CDC Reported Flu Deaths in Children Exceeds Seasonal High June 8, 2018

What are the symptoms of the flu for a week?

Even in healthy people who don’t develop complications, the flu can cause symptoms that persist for weeks, including: 1 Fatigue 2 Weakness 3 Low appetite 4 Dry cough 5 Airway irritation that affects how long you can be active 6 Loss of sense of smell, which in rare cases becomes permanent (6) More ...

How many died of the seasonal flu in 2018?

CDC estimates that influenza was associated with more than 35.5 million illnesses, more than 16.5 million medical visits, 490,600 hospitalizations, and 34,200 deaths during the 2018–2019 influenza season.

What flu was prevalent in 2018?

Background and Results: 2018-2019 Flu Burden Estimates Influenza A viruses were the predominant circulating viruses last year. While influenza A(H1N1pdm09) viruses predominated from October 2018 – mid February 2019, influenza A(H3N2) viruses were more commonly reported starting in late February 2019.

How long does the flu take to run a course?

For most healthy people, the flu is an uncomfortable but short-term illness that resolves itself as the immune system fights it off. Symptoms usually appear from one to four days after exposure to the virus, and they last five to seven days.

How long was the 2018 flu season?

21 weeksThe 2018-19 US flu season lasted 21 weeks, marking the longest season in a decade. The 2018-2019 United States flu season was the longest season in a decade, the US Centers for Disease Control and Prevention (CDC) has announced.

Is 2018 flu season bad?

Despite its low effectiveness, the flu season was relatively mild compared to previous flu seasons. The CDC estimated that between 37.4 million and 42.9 million people contracted the flu during the 2018-2019 season. Those cases led to between 531,000 and 647,000 hospitalization and 36,400-61,200 deaths.

How long did the H3N2 virus last?

The outbreak lasted around six weeks, affecting about 15% of the population (some 500,000 people infected), but the mortality rate was low and the clinical symptoms were mild.

Can flu relapse?

A relapse could be an indication that your child has a secondary infection or complication as a result of the flu, such as pneumonia. If your child gets sick again shortly after they showed signs of getting better, check with your healthcare provider as soon as you notice the change.

How long should I stay home with the flu?

Advise all employees to stay home if they are sick until at least 24 hours after their fever is gone without the use of fever-reducing medicines, or after symptoms have improved (at least 4-5 days after flu symptoms started).

How long does the worst part of the flu last?

The most severe symptoms generally last 2 to 3 days – the start of the flu is when the infection is at its worst, so the symptoms are at their most severe.

How many people died of the flu in 2017?

The worst recent flu season was 2017-2018, when 61,000 people died from the flu. Around 22,000 people died of the flu during the shorter 2019-2020 season — the second lowest death total in the past 10 years, after the 12,000 flu deaths in the 2011-2012 season.

How many people got the flu in 2018 2019?

29,000,000* 2019 to 2020 season is a preliminary estimate.SeasonSymptomatic IllnessesEstimate95% UI2017-201841,000,000(35,500,000 – 53,000,000)2018-201929,000,000(25,000,000 – 40,000,000)2019-2020*35,000,000(30,000,000 – 49,000,000)7 more rows

How many people died of influenza 2016?

The overall burden of influenza for the 2016-2017 season was an estimated 29 million influenza illnesses, 14 million influenza-associated medical visits, 500,000 influenza-related hospitalizations, and 38,000 influenza-associated deaths (Table: Estimated Influenza Disease Burden, by Season — United States, 2010-11 ...

How many cases of influenza in children?

This translated into an estimated 11 million cases of influenza in children, 28 million cases of influenza in working age adults (aged 18-64 years), and 6 million cases in adults aged 65 years and older.

What is the model of averted illness?

The model of averted illness calculates outcomes directly prevented among persons who were vaccinated. If there is also indirect protection from fewer infectious persons as a result of vaccination (i.e., herd immunity), the model would underestimate the number of illnesses and hospitalizations prevented by vaccination.

Is flu testing accurate?

Influenza testing is done at the request of the clinician, but not everyone is tested and influenza tests are not perfectly accurate. Thus, the reports of laboratory-confirmed influenza-related hospitalizations to FluSurv-NET are likely underestimates of the true number of hospitalizations.

When does the flu start?

In the U.S., influenza infections generally begin to appear in October or November and flu activity lasts through the winter, often until March and sometimes later into the spring. Vaccination remains one of the most effective methods for avoiding infection from influenza.

How many people died from the Spanish flu?

1 It is estimated that nearly one-third of the entire world's population at the time—a total of nearly 500 million people—were infected with the virus and experienced symptoms of infection; approximately 50 million people died from infection with Spanish influenza. 11 A unique feature of this virus was that deaths attributed to it were not distributed in a typical "u-shaped curve": the virus of 1918 affected more than just young children and the elderly and was described with a "w- shaped curve" due to its propensity to affect significant numbers of young adults aged 15 to 34 years in addition to the young and the elderly. 11 While advances in vaccination, antibiotics, and preventive efforts have reduced the chance of a pandemic of this magnitude occurring again, it is estimated that a similar virus would kill nearly 100 million people today. 11

How did H2N2 affect the world?

The H2N2 virus affected populations in a more traditional "u-curve" than the Spanish influenza pandemic. The advent of laboratory isolation and delays in mortality related to the H2N2 virus reinforced the importance of immunization to prevent future outbreaks. 12

What is a cell culture based IIV?

The cell culture-based IIV (ccIIV) is developed in the same manner as the traditional IIV, but mammalian cells are used instead of traditional eggs. 16 While this significantly reduces the risks associated with the use of eggs, eggs are still involved in part of the production process.

Is the flu a contagious disease?

The influenza virus significantly impacts public health worldwide. It causes a highly contagious illness that disproportionately affects children and the elderly. Influenza (commonly called "flu") is a powerful infectious disease that has caused significant outbreaks in the absence of vaccination.

How long does it take for the flu to show symptoms?

Flu symptoms usually start within one to four days after infection. Unlike a common cold, the effects of an influenza virus infection can come on very suddenly. (2) The first signs of the flu are often a fever or chills, accompanied by headache, sore throat, dry cough, runny nose, muscle aches, and fatigue. (2)

How to tell the difference between a cold and a flu?

A cold and the flu are both respiratory infections, but they’re caused by different viruses. A cold can be caused by more than 200 distinct viruses, according to the Centers for Disease Control and Prevention (CDC), while there are only a handful of viruses that cause the flu.

What are the symptoms of a cold?

The most common cold symptoms include fatigue, sore or scratchy throat, nasal congestion or stuffiness, and a runny nose, followed by sneezing and coughing. Fever is not typical with a cold, but a low-grade fever isn’t out of the question, according to the Merck Manual. ( 3)

How long does a cough last?

(1) Symptoms usually disappear in 4 to 10 days, although a cough often lasts into the second week. (3) A cold may last longer or be more severe in people who have chronic health issues. (1)

What happens if you have a phlegm infection?

As the illness progresses, a person may have warm, flushed skin, watery or bloodshot eyes, a severe cough that produces phlegm, and nasal congestion. Nausea and vomiting may also occur, especially among children, according to the Merck Manual. ( 4)

How long can you be sick from a complication?

When complications develop, a person will likely be sick for longer than a week or two, depending on the severity of the complication, how quickly a person receives treatment for it, and how well the patient responds to treatment.

What is the best medicine for a fever?

Acetaminophen (Tylenol) and nonsteroidal anti-inflammatory drugs like ibuprofen (Advil, Motrin, and Ibuprin) are effective treatments for fever and aches caused by either a cold or the flu. People with either illness should also be sure to rest and drink plenty of fluids. (3,4)

How many flu shots were shipped in 2018?

market. As of February 23, 2018, manufacturers reported having shipped approximately 155.3 million doses of flu vaccine; a record number of flu vaccine doses distributed.

Is the flu notifiable in adults?

While flu deaths in children are reported to CDC, flu deaths in adults are not nationally notifiable. In order to monitor influenza related deaths in all age groups, CDC tracks pneumonia and influenza (P&I)-attributed deaths through the National Center for Health Statistics (NCHS) Mortality Reporting System.