Liver function tests. Liver function tests (LFTs or LFs) are groups of blood tests that give information about the state of a patient's liver.[1] These tests include prothrombin time (PT/INR), aPTT, albumin, bilirubin (direct and indirect), and others.
This is unusual since influenza is normally most deadly to the very young (under age 2) and the very old (over age 70). The total mortality of the 1918â1919 pandemic is not known, but it is estimated that 2.5% to 5% of the world's population was killed.
On 11 June 2009, the ongoing outbreak of Influenza A/H1N1, commonly referred to as swine flu, was officially declared by the WHO to be the first influenza pandemic of the 21st century and a new strain of Influenza A virus subtype H1N1 first identified in April 2009.