Stalks, which are damaged and look just like as in any regular pattern are occurring worldwide each year approximately one million more (in the number of cases also square area) than of that found in regular patterns.
Mabua, ambayo ni kuharibiwa na kuangalia kama tu kama katika mfano yoyote ya mara kwa mara ni yanayotokea duniani kote Kila mwaka takriban milioni moja zaidi (katika namba ya kesi teh pia mraba eneo) ya Than Hiyo hupatikana katika mifumo ya mara kwa mara.