In fatal cases of 2009 H1N1 influenza, the virus can damage cells throughout the respiratory airway, much like the viruses that caused the 1918 and 1957 influenza pandemics, report researchers from the National Institutes of Health (NIH) and the New York City Office of Chief Medical Examiner.

The Food and Drug Administration (FDA) licensed the first 2009 influenza A (H1N1) monovalent vaccines ("H1N1 vaccines") on September 15, 2009

As of 29 November 2009, worldwide more than 207 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 8768 deaths.

A clinical trial comparing immune responses of healthy pregnant and non-pregnant women to an inactivated 2009 H1N1 influenza vaccine has begun enrolling volunteers.

Podcast: 2009 H1N1 Information for Parents who have Children with High-Risk Medical Conditions

Special H1N1 Editions of FluAid, FluSurge, and FluWorkLoss

Oseltamivir Resistance in Immunocompromised Hospital Patients

Opening and Mixing Tamiflu® Capsules with Liquids if Child Cannot Swallow Capsules: Questions and Answers

As of 22 November 2009, worldwide more than 207 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 7820 deaths.

The U.S. Food and Drug Administration today approved Agriflu for people ages 18 years and older to prevent disease caused by influenza virus subtypes A and B.

This document provides interim guidance specific for U.S.-based emergency shelters used by displaced persons during a natural or man-made disaster during the 2009-2010 influenza (“flu”) season.

This new guidance considers the potential for people to be placed in close quarters in an emergency shelter, during a natural or man-made disaster, this 2009-2010 flu season. Prevention and response measures for shelter managers, workers, volunteers, and clients are provided specifically for this flu season.

WHO: Clinical Management of Human Infection with Pandemic (H1N1) 2009: Revised Guidance

The Norwegian Institute of Public Health has informed WHO of a mutation detected in three H1N1 viruses. The viruses were isolated from the first two fatal cases of pandemic influenza in the country and one patient with severe illness.

As of 15 November 2009, worldwide more than 206 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 6770 deaths.

Updated Guidance for the Use of CSL 2009 H1N1 Monovalent Vaccine

To date, WHO has received vaccination information from 16 of around 40 countries conducting national H1N1 pandemic vaccine campaigns.

Invasive pneumococcal disease is an infection caused by a type of bacteria called Streptococcus pneumoniae (pneumococcus).

The Federal Trade Commission last week sent 10 warning letters to Web site operators who made questionable claims that their products can prevent, treat, or cure the H1N1 flu, commonly known as swine flu.

Situation Update. During the week of November 1-7, 2009, influenza activity remained high in the United States, with some key indicators decreasing slightly and others continuing to climb.