Related by context. Frequent words. (Click for all words.) 70 viral infection 64 rib injury 63 calf injury 63 calf strain 63 groin strain 63 thigh injury 62 hamstring injury 62 hamstring strain 61 groin injury 60 illness 60 bronchitis 59 ankle injury 58 knee injury 57 Achilles injury 57 sprained ankle 57 sore throat 56 flu 56 strained hamstring 55 dislocated shoulder 53 mumps 53 sore shoulder 53 abdominal strain 52 flu virus 52 virus 52 bacterial infection 51 tendinitis 51 ankle sprain 51 staph infection 50 sprained knee 50 spasms 50 ailment 50 pneumonia 49 injury 49 hamstring 49 H#N# virus 49 concussion 48 soreness 48 sickness 48 cramps 48 swine flu 48 jet lag 47 nagging injuries 46 infection 46 sprain 46 bone bruise 46 colds 45 diarrhea 45 groin 45 broken collarbone 45 ligament damage 45 stress fracture 44 influenza 44 Swine Flu 43 knee surgery 43 bug 43 cramp 43 unwell 43 sprained 43 sore 43 meningitis 42 Flu 42 swine flu virus 42 ankle 42 Achilles 42 dehydration 41 shin 41 Achilles tendon 41 H#N# flu 41 dengue fever 41 Influenza 41 torn ligament 40 Swine flu 40 highly contagious 40 swine flu outbreak 40 tiredness 40 broken jaw 40 encephalitis 40 MRSA 40 H#N# 40 whooping cough 40 knee 39 illnesses 39 vomiting 39 hepatitis 39 spasm 39 hangover 39 quadriceps 39 malady 39 heat exhaustion 39 E. coli 39 bird flu virus 38 dizziness 38 torn ACL 38 fever 38 Lyme disease 38 avian flu 38 bird flu 38 measles 38 tuberculosis 38 sidelined 38 chest pains