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Table 1 Potential annual numbers of viraemic visitors to Europe have been extrapolated from a single week's FlightStats data [50]

From: Pan-European Chikungunya surveillance: designing risk stratified surveillance zones

European Destination Chikungunya Active Hotspots Estimated Incidence (% passengers) Estimated Annual Potentially Viraemic Passengers
    Flights Passengers  
France Reunion 35.71* 1,272 409,200 146,125
  Mauritius 0.81 1,488 497,040 4,026
  India 0.52 2,736 819,264 4,260
  Gabon 0.43 564 150,960 649
  Sri Lanka 0.20 156 36,864 74
  Congo 0.09 564 135,168 122
  Malaysia 0.01 1,020 307,200 31
    *12,240 3,763,584 155,287
Germany Maldives 3.51 204 52,896 1,857
  Mauritius 0.81 204 54,528 442
  India 0.34 11,208 3,834,000 13,036
  Sri Lanka 0.20 216 54,048 108
  Malaysia 0.01 456 141,840 14
    21,396 7,458,336 15,456
Italy Seychelles 10.81 144 40,608 4,390
  Maldives 3.51 264 61,440 2,157
  Mauritius 0.81 264 70,320 570
  India 0.01 492 151,200 15
  Malaysia 0.01 492 153,600 15
    3,408 1,060,800 7,146
United Kingdom Mauritius 0.81 504 158,400 1,283
  India 0.35 6,360 211,136 739
  Sri Lanka 0.20 600 167,040 334
  Malaysia 0.01 1,080 398,112 40
    18,864 4,824,368 2,396
Switzerland Maldives 3.51 48 12,288 431
  Mauritius 0.81 48 13,920 113
  India 0.24 2,304 610,512 1,465
    6,144 1,858,304 2,009
Belgium India 0.19 3,025 878,976 1,670
  Congo 0.09 408 118,800 107
    3,637 1,054,416 1,777
Netherlands India 0.20 2,136 610,512 1,221
  Malaysia 0.01 2,136 811,680 81
    6,936 2,389,632 1,302
Spain Mauritius 0.81 480 13,920 113
    936 184,560 113
Totals    73,561 22,594,000 185,486
  1. (*Note totals for each European country include visitors from other Chikungunya active regions, not listed as the estimated number of viraemic visitors was <1)