Privacy Statement   Terms & Conditions   Sitemap  
  Diseases   Research   About us  
TBE Meningococcal Disease Influenza Smallpox

  Clinical Symptoms & Signs

Symptoms of influenza virus are usually experienced one to four days after infection occurs. During this incubation period the virus replicates in the respiratory tract. Influenza can spread to other persons before symptoms start and up to three to four days after symptoms appear.

Usually the symptoms start very quickly and can include

  • Headache

  • Sudden onset of chills

  • Generalized aches and pains (most pronounced in the back and legs)

  • Fever (usually 38C to 39,5C /100F-103F/ in adults and often even higher in children) lasting from one day to a week

  • Dry cough

  • Runny or stuffy nose

  • Substernal burning

  • Scratchy and sore throat

  • Fatigue, weakness and sweating

  • Exhaustion

  • Warm and flushed skin

  • Loss of appetite

  • Inflammation of conjunctiva

Flu normally lasts for approximately one week. Nausea, vomiting and diarrhea can sometimes accompany the infection, especially in children, but they are rarely the primary symptoms. Only in very rare cases does the flu cause symptoms in the stomach or the intestines. The so-called "stomach flu" is not influenza, but rather an infection caused by bacteria or other viruses such as adeno- or rotavirus. Influenza has been recently demonstrated as a major cause of pediatric otitis media.

 » Printversion

  » find


Baxter Announces Final Phase I/II Data and Initiation of Phase III Clinical Trial for Candidate Pandemic H5N1 Influenza Vaccine
» read more

Baxter receives preparedness contract from Austrian Ministry of Health for Pandemic Influenza Vaccine
» read more

Baxter Announces Safety and Immunogenicity Results from Phase I/II Clinical Trial of Cell-Based Candidate H5N1 Pandemic Vaccine
» read more

Baxter Vaccines Industriestrasse 67, A-1221 Wien, Tel: +43-1-20100,