SYMTOMS OF SWINE FLU -
Swine influenza virus (SIV) is caused by Orthomyxoviruses that are endemic to pig populations. SIV strains isolated to date have been classified either as Influenzavirus C or one of the various subtypes of the genus Influenzavirus A.
Swine flu, unlike bird flu, is able to pass from human to human contact. The 2009 swine flu outbreak is the spread of a new strain of H1N1 influenza virus that was first detected by public health agencies in March 2009. Local outbreaks of influenza-like illness were detected in three areas of Mexico, but the presence of this new strain was not discovered for a month.
Following this discovery in the parts of United States bordering Mexico, its presence was swiftly confirmed in the local outbreaks in Mexico, and in isolated cases elsewhere. By April 27, the new strain was confirmed also in Canada, Spain, and the United Kingdom and suspected in many other nations, with over 1,800 candidate cases.
The new strain is an apparent reassortment of several strains of influenza A virus subtype H1N1, including a strain endemic in humans and two strains endemic in pigs, as well as an avian influenza.
Reassortment is common in influenza viruses, due to the structure of their genome. This particular reassortment is consistent with a transmission of swine influenza from pig to human combined with the mixing of two viral infections in the same person.
Many countries confirmed that inbound international passengers will be screened. Typical airport health screening involves asking passengers which countries they have visited and checking whether they feel or look particularly unwell.
On April 27, the CDC recommended the use of Tamiflu and Relenza for both treatment and prevention of the new strain.
Some physicians in the US are recommending the use of masks when in public. The purpose of a face mask is to effectively cover a person’s mouth and nose so that if a person is around someone who is infected, there is a decreased likelihood of transmission.