Among businesses seeing an impact from the outbreak, 53% had seen a decrease in bookings from Wales, 38% had the same level and 9% had more bookings from this market.
Ymhlith busnesau a welodd effaith o'r achosion, roedd 53% wedi gweld gostyngiad yn nifer yr archebion o Gymru, roedd gan 38% yr un lefel a 9% wedi cael mwy o archebion o'r farchnad hon.