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2012/2013 Flu Update #7

Update #7 for the week of January 28, 2013

This weeks Mitigation Journal Flu Update includes publicly available data from the CDC FluView, Google Flu Trends, Sickweather and other media sources.

This report contains data from the Centers for Disease Control and Prevention 2012/2013 Influenza season week 3 for the period ending January 119, 2013. In this reporting period (January 13-19, 2013) CDC flu data sources report high rates of ILI activity in twenty-six states, moderate activity in fourteen states, and nine states defined as low ILI activity. In contrast, there were forty-eight states demonstrating widespread activity in week 2 (see Flu Update #6) and forty-seven states reporting widespread flu in week 1 (see Flu Update #5). Many healthcare facilities have implemented some form of visitation limits in effort to reduce the spread of influenza within the patient population.

Viral surveillance results for week 3, 2013 shows 26.1% (3,129) of the 11,948 samples tested positive for flu, down slightly from week 2 where 29.4% (3,638) of the 12,360 samples tested positive for flu. The proportion of deaths related to influenza and pneumonia remain  above epidemic threshold for week 3. The elderly continue to make up the majority of people hospitalized with ILI as 50% of hospitalizations were those aged 65 or older.

Outpatient ILI surveillance (those seen at clinics and doctors offices for ILI complaints) was 4.3% for week 3 and remained above the national base line of 2.2%.

Antiviral resistance is a non-issue at this point. None of the circulating strains (H1N1, H3N2 or Influenza B) are resistant to Oseltamivir or Zanamivir.

CDC Flu Interactive Map

Google Flu Trends Data

Sickweather Data

In the news
Minnesota Department of Health: Flu remains widespread but may be past peak
Can you emit influenza during routine care? A new study suggests that patients with influenza can emit small virus-containing particles into the surrounding air during routine patient care, potentially exposing health care providers to influenza.

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