Influenza - Chem-Bio-Rad Suspicion
Influenza presents with classic symptoms consisting of the sudden onset of fever, malaise, sore throat, nonproductive cough, myalgias, headache, and nasal congestion. Chills are common, as are nausea and vomiting in children. Pregnant women are at increased risk for severe illness from influenza. Most viruses that affect the respiratory tract can cause a rash, flu included (see viral exanthem).
Influenza is highly contagious and is spread by aerosol droplets. The incubation period is 1-4 days, but it becomes contagious 1 day prior to the onset of symptoms. The mortality rate of naturally occurring influenza is low but tends to be higher in the elderly and debilitated persons. Flu activity usually peaks in February.
The Spanish flu pandemic of 1918 was particularly virulent, killing over 20 million people worldwide. With present day biotechnology, it would be possible to produce an influenza virus weapon with traits of both the H5N1 and the 1918 influenza viruses. As a weapon, influenza would be released as an aerosol. The mortality of a designer influenza containing genes from H5N1 and/or the 1918 Spanish flu would presumably be much higher than for naturally occurring influenza. The initial symptoms produced by many of the biological weapons are nearly identical to those produced by influenza ("flu-like illness").
Current Flu Season
Per the Centers for Disease Control and Prevention (CDC), the 2017–2018 influenza season was high severity, with influenza A (H3N2) viruses predominating. Peak clinical laboratory influenza positivity ranged from the end of December to mid-February. Influenza activity in the United States is expected to pick up in Fall 2018.
J10.1 – Influenza due to other identified influenza virus with other respiratory manifestations
6142004 – Influenza
- Inhalational anthrax
- Dengue fever
- Legionellosis (Legionnaires' disease)
- Marburg virus infection
- Nipah virus infection
- Q fever
- Rift Valley fever
- Rocky Mountain spotted fever
- Staphylococcal enterotoxin B
- Typhoid fever
- Venezuelan equine encephalitis