Table 3 Characteristics of the MTZ cluster patients linked by the place of residence and/or by common risk factors for TB ID Age nº (years) 371 30 42 25 Sex Date of isolation HIV status Origin Area of Residence a Characteristics in common b Man Man 200307 200206 Negative Negative Guinea Spain 11 11 Neighbours 177 171 32 38 Woman Man 200109 200108 Negative Negative Spain Spain 18d 18d Neighbours 60 258 167 246 322 69 263 44 36 47 33 27 24 53 Man Man Man Man Man Man Man 200209 200205 200107 200204 200303 200211 200207 Negative Positive Unknown Negative Negative Negative Negative Spain Spain Spain Spain Egypt Unknown Spain 18b 18b 18a 18a Prison, alcoholism Prison, alcoholism Prison Neighbour of 322 Prison, neighbour of 246, IDU Neighbours, alcoholism Neighbours, alcoholism 374 217 23 304 46 34 36 34 Man Man Man Man 200308 200112 200112 200303 Positive Positive Positive Negative Spain Unknown Spain South America 18a - Ex-IDU Ex-IDU Ex-IDU Ex-IDU 79 434 271 178 26 56 39 47 Man Man Man Man 200212 200403 200208 200109 Positive Unknown Negative Negative Venezuela Spain Spain Spain 6 6 3 Alcoholism. Worked next to area 5 Alcoholism Alcoholism 428 26 Woman 200402 Positive Spain 4 Lived in the same area than 442 (table 2) 318 312 44 25 Man Man 200303 200302 Negative Negative Gambia Gambia 10 15 years in Spain 10 years in Spain. Worked in area 8. 59 76 125 39 43 60 Woman Man Woman 200209 200212 200402 Negative Unknown Negative Spain Ukraine Spain 8 8 8 302 427 41 46 Man Man 200301 200402 Negative Negative Spain Spain 15 15 94 194 50 57 Man Man 200307 200109 Negative Negative Spain Spain 9 9 209 283 31 26 Man Man 200112 200209 Negative Negative Spain Spain 12 12 174 205 36 26 Woman Woman 200108 200111 Negative Negative Spain Spain 13 13 342 276 21 35 Man Man 200305 200209 Negative Negative Spain Spain 14 14 237 297 49 28 Man Man 200204 200210 Positive Negative Spain Unknown 5 5 247 199 385 18 431 214 370 26 260 158 a 36 63 44 68 29 53 52 31 33 20 Woman Man Man Man Woman Man Man Woman Man Woman 200205 200111 200309 200111 200402 200201 200308 200201 200206 200106 Positive Unknown Positive Unknown Positive Negative Negative Negative Negative Unknown Spain Spain Spain Spain Spain Spain Spain Spain Spain Spain 18a 18a 18b 18b 18c 18c 18c 18c 18d 18d The areas of residence are shown in figure 2. The dash (-) means that the patients did not live in any of the 18 areas of residence (see figure 2). b Patients were classified as “neighbours” when they lived in the same street. ID nº: patient identification number. IDU: injection drug user.