Investigating clusters of group A streptococcal disease

    INTRODUCTION START

INVESTIGATION

USING

CALCULATOR

CALCULATOR FAQs
             
   

Calculator to estimate expected number of invasive group A streptococcus cases in county or region

     
   

Fill in the appropriate data to get the results:

   

   

    Current month  
   

 

Number of invasive GAS cases in current month (observed)

 
   

 

Number of invasive GAS cases in previous month

 
   

 

Mean temperature in previous month(oF)

click here for weather data in your area; 1)click on your state 2) select table 3) select year

 
   

 

County or region population (minimum 250,000; counties may be combined)

click here for population data for your region

 
   

 

Region size (square miles)

click here and scroll for census data

 
   

 

Black or African American persons, percent

click here for census data. Why do we ask? See FAQ's

 
   

 

Persons below poverty line, percent

click here and find "Persons below poverty line, percent"

 
   

 

Estimated % of GAS cases who are HIV+ (historically)

May be left blank if unknown; a zero entry is different from a blank

 
   

 

Estimated % of GAS cases who are injection drug users (historically)

May be left blank if unknown; a zero entry is different from a blank

 
         
   

 
   

              

  Back to Home

 
   

 
   

Legal disclaimer: This website is intended as a tool to assist with a group A streptococcal investigation. A statistically significant finding may reflect that further investigation may be warranted; it should not be the sole indicator to determine a cluster or outbreak situation. Questions may be directed to your state health department or to the CDC Respiratory Diseases Branch at (404) 639-2215

   

   

This page last modified on December 10, 2007
Content last reviewed on December 10, 2007
Content Source: National Center for Immunizations and Respiratory Diseases