H1N1 is a form of influenza that contains genetic material from human, swine and avian flu viruses, per the Mayo Clinic. It made its first appearance in April 2009 and was considered a global pandemic by June 2009. H1N1 is similar to the seasonal flu in many ways but creates concerns for pregnant women, young children, the elderly and individuals with existing health issues. The Mayo Clinic explains that the flu virus can be spread quickly and easily from person to person.
Initial Symptoms
The Mayo Clinic explains that after an individual is exposed to the H1N1 virus, symptoms of illness will present themselves within three to five days. Like the common cold or seasonal flu, initial symptoms of H1N1 include sneezing, runny nose, congestion, coughing and a sore throat. Individuals who are in good health at the time of infection may wrongly assume they have a common cold. Tiredness may set in early on and get progressively worse. H1N1 may also lead to watery eyes due to sinus pressure and congestion.
Typical Flu Symptoms
According to Flu.gov, most symptoms of H1N1 are similar to a common cold or the flu except that an individual may feel much worse when infected with the virus. Some individuals have suffered from diarrhea and vomiting with H1N1, the Mayo Clinic says. A fever with body ache and chills also occurs soon after the initial symptoms present themselves. Fatigue and headache are also common. Children may not exhibit the respiratory symptoms or fever the way adults might, according to a report on Flu.gov. Instead they may have body aches, fatigue and possibly a runny nose.
Serious Symptoms
Individuals with other illnesses or health conditions may be at a higher risk of developing complications from H1N1 infection. Children are especially susceptible to serious complications because their symptoms vary from adults' symptoms of infection. According to the Centers for Disease Control and Prevention, serious side effects that require immediate medical attention include difficulty breathing, rapid breathing, bluish skin color, pain or pressure in the chest, sudden dizziness, confusion, and severe or persistent vomiting. They also recommend medical treatment for infants and children who are not drinking enough water, are not waking up or interacting, are not comforted by being held or are too irritable to be held, and a fever with a rash. Any child who has flu-like symptoms that improve and return with a fever should also be taken to a medical professional right away. Other serious signs in children include a lack of responsiveness or disinterest in playing or other activity, the Mayo Clinic says.
