"Someone who gets the flu vaccine may still get the flu but will likely have much better chances of avoiding hospitalization and death compared to someone who is unvaccinated", said Leung.
Jose R. Romero, MD, FAAP, FIDSA, FPIDS, professor of pediatrics, Horace C. Cabe Endowed Chair in Infectious Diseases, and director of the pediatric infectious diseases section at the University of Arkansas for Medical Sciences and Arkansas Children's Hospital, as well as director of clinical trials research at Arkansas Children's Research Institute, told Infectious Diseases in Children that this vaccine has undergone substantial review.
Here's what to know about the nasal flu vaccine. Most flu vaccines are grown in eggs, which can cause the virus to mutate and differ from circulating strains, and thus become less protective.
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Along with FluMist, immunization providers may choose to give their patients one of two types of flu shots: either the inactivated influenza vaccine (known as IIV) or the recombinant influenza vaccine (RIV), CDC spokeswoman Kristen Nordlund said.
"They are hard to grow in eggs and the process induces mutations", said Belongia. "Social distance from people who are sick, or if you are sick, stay a safe distance away from others, or better, minimize activities in the general population". One such effort - a universal flu vaccine study that's gauging a different virus protein by which to make the vaccine - has the potential to right the errors of original antigenic sin. It also might provide lifetime protection, eliminating the need for the annual shot. Rather than simply examining different strains of the virus, scientists can now examine different molecular subtypes to see how they are affected by vaccines.
The needle-free FluMist influenza vaccine is coming back to the USA after two years off the market, promising a less painful way for people to inoculate themselves against the infectious disease. It's the only nasal spray flu vaccine on the market and is approved for people aged 2 to 49.
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"Influenza viruses typically circulate widely in the United States annually, from the late fall through the early spring", according to a CDC seasonal vaccine recommendation. "That's progress but we still have a long way to go".
"I have real mixed emotions about this because I think we want to protect as many people as we can, particularly, as a pediatrician, for children", says Dr. Henry Bernstein, a professor of Pediatrics at Cohen Children's Medical Center in NY.
Because the flu is so widespread, even a vaccine with limited effectiveness can save thousands of lives, Belongia said. "It will protect you from getting as ill", said Sampathkumar.
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