Related by context. Frequent words. (Click for all words.) 54 fungal disease 54 fungus 52 Asian soybean rust 51 soybean rust 51 pathogen 50 Desertification 50 nematode 49 nematodes 49 avian influenza virus 48 highly pathogenic 47 Fusarium 47 aphid 46 disease 46 fungal diseases 46 avian flu virus 46 deadly H#N# virus 46 malaria parasite 46 avian influenza 46 pathogens 45 Ebola 45 emerald ash borer 45 Avian Influenza 45 bird flu virus 45 root rot 45 bacterium 44 parasite 44 weevil 44 insect pests 44 powdery mildew 44 ash borer 44 H#N# avian flu 44 schistosomiasis 43 desertification 43 pests 43 malaria 43 highly pathogenic avian influenza 43 mosquito borne disease 43 aphids 43 Marburg virus 43 Colony Collapse Disorder 43 herpes virus 43 Avian flu 43 H#N# avian influenza 42 tropical diseases 42 arid regions 42 Avian influenza 42 avian flu 42 insect 41 microbe 41 beetle 41 weevils 41 flu virus 41 microorganism 40 mosquito borne diseases 40 spores 40 thrips 40 vector borne diseases 40 didymo 40 H#N# virus 40 Emerald Ash Borer 40 Salmonella bacteria 40 HIV AIDS pandemic 40 fungal infection 40 borne diseases 40 H#N# influenza virus 40 diarrheal diseases 40 bird flu 40 infestation 40 stink bugs 40 insects 39 West Nile 39 invasive species 39 nose syndrome 39 mosquito borne 39 HIV AIDS epidemic 39 epidemics 39 Avian Flu 39 germ 39 monkeypox 39 bluetongue 39 zebra mussel 39 borer 38 AIDS pandemic 38 mosquitoes 38 prolonged drought 38 gypsy moths 38 water borne diseases 38 semi arid 38 HIV AIDs 38 mites 38 organism 38 Sahel 38 Pseudomonas 37 mosquito borne virus 37 fungal 37 crop yields 37 HIV AIDS 37 moth 37 Africanized bees 37 Malnutrition 37 infestations