Related by context. Frequent words. (Click for all words.) 50 XDR TB 48 MDR TB 48 drug resistant tuberculosis 47 TB 43 drug resistant TB 43 tuberculosis 41 drug resistant strains 40 MRSA 39 Ebola 38 tuberculosis TB 37 vancomycin 37 Tuberculosis 36 resistant strains 36 gonorrhea 36 Ebola virus 35 infection 35 oseltamivir 35 vCJD 35 superbug 35 hepatitis C 35 MRSA infection 34 XMRV 34 HIV 34 antiviral drug 34 Syphilis 33 NDM 1 33 Clostridium difficile 33 leprosy 33 coronavirus 33 HIV infection 33 superbugs 33 Infectious Disease 33 subtype 33 Hepatitis C 33 hepatitis C. 33 pathogen 33 meningococcal disease 33 backlogs 33 influenza 33 infected 33 HBV 32 methicillin resistant Staphylococcus aureus 32 glioblastoma 32 CD4 count 32 C. difficile 32 RSV 32 smallpox 32 H#N# 32 swine flu virus 32 HCV 32 norovirus 32 virus 32 cholera 32 SARS 32 influenza virus 32 syphilis 32 infectious disease 32 H#N# strain 32 hepatitis C virus 32 highly contagious 32 opportunistic infections 32 H#N# virus 31 flu virus 31 virulent strain 31 E.coli 31 disease 31 H#N# avian influenza 31 H#N# avian flu 31 flu viruses 31 avian flu virus 31 HAART 31 infections 31 E. coli O# H7 31 infectious diseases 30 resistant bacteria 30 sepsis 30 human immunodeficiency virus 30 sexually transmitted infections 30 sickle cell disease 30 measles 30 Dengue fever 30 bird flu virus 30 influenza viruses 30 pertussis 30 H. pylori 30 H#N# bird flu 30 lamivudine 30 MRSA infections 30 contagious disease 30 Infections 30 Infection 30 anti retroviral treatment 30 antibiotic resistant bacteria 30 avian flu 30 antiretroviral 30 antiviral drugs 29 metastatic melanoma 29 HIV AIDS 29 Dengue 29 sleeping sickness 29 pandemic