Questions
& Answers
What are the flu indicators and where are they from?
Key Flu Indicators
Each week CDC analyzes information
about influenza disease activity in the United States and publishes
findings of key flu indicators in a report called FluView.
During the week of August 9-15, 2009, a review of these key indictors found
that influenza activity had decreased slightly in the United States from the previous
week. However, there were still higher levels of influenza activity than is
normal for this time of year. Below is a summary of the most recent key
indicators:
- Visits to doctors
for influenza-like illness (ILI) were
highest in February during the 2008-09 flu season, but rose again in April 2009 after the new
H1N1 virus emerged. Current visits to doctors for influenza-like illness
are down from April, but are higher than what is expected in the
summer.
- Total influenza hospitalization
rates for adults and children remain low and are well below the seasonal winter-time average of the last four
years.
- The proportion of deaths
attributed to pneumonia and
influenza (P&I) was low and within the bounds of what is expected in
the summer.
- Most state health officials
are reporting local or sporadic influenza activity. Two states are
reporting widespread influenza activity at this time. Any reports of
widespread influenza activity in August are very unusual.
- Almost all of the influenza viruses
identified were the new 2009 H1N1 influenza A
viruses. These 2009 H1N1 viruses remain similar to the viruses chosen for
the 2009 H1N1 vaccine and remain susceptible to antiviral drugs (oseltamivir and zanamivir).
- Use waterless sanitizers or
keep washing hands with soap water.