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Table 1 Occurrence of tuberculosis among the household contacts with and without symptoms by regions in 2008

From: Tuberculosis burden in China: a high prevalence of pulmonary tuberculosis in household contacts with and without symptoms

  Index patients Overall   With symptoms Without symptoms
Case Contact Prevalence Notification Case Contact Prevalence Case Contact Prevalence
     1/100,000 1/100,000    1/100,000    1/100,000
Overall 1575 92 3355 2742 73.33 46 254 18110 46 3101 1483
Positive cases 1575 21 3355 626 43.94 12 254 4724 9 3101 290
By regions            
Mega polis 175 2 363 551 21.77 1 15 6667 1 348 287
Centre region 437 26 661 3933 77.22 9 46 19565 17 615 2764
Eastern region 465 58 1051 5519 81.05 34 150 22667 24 901 2664
Western region 498 6 1280 469 79.93 2 43 4651 4 1237 323
  1. Index patient: the first positive patient was found in family.
  2. Case: the active pulmonary tuberculosis was found among the household contacts.
  3. Contact: the number of family members who have contacted with the index patients.
  4. Positive cases: the smear positive patients were found among the household contacts.
  5. By regions: we divided whole country into 4 regions based on the distribution of TB in China.