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(Click for frequent words.) 77 bird flu virus 75 H#N# strain 75 avian flu virus 73 avian influenza virus 72 avian influenza 72 H#N# bird flu 71 bird flu 71 avian flu 71 H#N# avian flu 70 H#N# avian influenza 70 H#N# virus 68 deadly H#N# virus 68 lethal H#N# strain 67 highly pathogenic H#N# strain 67 H#N# 67 Avian influenza 66 H7 virus 66 bird flu outbreak 66 highly pathogenic virus 66 Bird flu 65 highly pathogenic H#N# 65 birdflu 65 highly pathogenic H#N# virus 65 Avian flu 64 highly pathogenic 64 H5 virus 64 deadly H#N# strain 64 H5 bird flu 64 highly pathogenic bird flu 64 H5NI virus 63 avian influenza outbreak 63 A/H#N# virus 63 highly pathogenic strain 63 flu virus 63 H5 strain 63 swine flu virus 63 virulent H#N# virus 63 avian influenza H#N# 62 highly pathogenic avian influenza 62 influenza virus 62 avian virus 62 H5 avian flu 61 bluetongue virus 61 avian influenza viruses 61 Ebola Reston virus 61 mutated strain 61 virulent H#N# bird flu 61 H#N# subtype 60 virulent H#N# strain 60 pandemic H#N# virus 60 H#N# viruses 60 Ebola Reston 60 H5NI 60 influenza A/H#N# virus 60 H#N# influenza virus 60 H5 subtype 59 virulent H#N# 59 deadly H#N# avian 59 AH#N# virus 59 virus 59 pathogenic H#N# strain 59 H7 strain 59 H#N# influenza strain 58 avian flu viruses 58 highly pathogenic avian flu 58 A/H#N# influenza 58 H7 strains 58 influenza 58 bird flue 58 Bird Flu 58 highly pathogenic H#N# avian 58 A/H#N# flu virus 58 Swine fever 58 Chikungunya virus 58 Bluetongue virus 58 poultry flocks 57 monkeypox 57 H#N# avian influenza viruses 57 swine flu 57 H5NI strain 57 madcow disease 57 Avian Influenza 57 monkeypox virus 57 mosquito borne disease 57 Chikungunya fever 57 H#N#virus 57 avian influenza outbreaks 57 A/H#N# 57 mosquito borne virus 57 H5 56 H5 viruses 56 A/H#N# flu 56 devastated poultry flocks 56 haemorrhagic fever 56 Marburg haemorrhagic fever 56 influenza viruses 56 birdflu virus 56 Influenza A/H#N# 56 mutated virus 56 influenza A/H#N# 56 Avian Flu 56 bird flu epidemic 56 Marburg fever 55 Ebola 55 H#N# mutates 55 A/H#N# infection 55 flu strains 55 flu viruses 55 corona virus 55 HN# strain 55 pathogenic bird flu 55 A/H#N# influenza virus 55 CCHF 55 virulent strain 55 HPAI H#N# 55 polio outbreak 55 H#N# swine flu 55 Ebola outbreak 55 H7 subtype 55 H5 influenza 55 bird flu outbreaks 54 swine influenza 54 Streptococcus suis 54 HPAI 54 H#N# flu 54 Rift Valley Fever RVF 54 Marburg virus 54 pathogenic strain 54 H#N# Avian Flu 54 polio virus 54 West Nile virus 54 H7 avian flu 54 pandemic strain 54 influenza subtype 54 Fujian strain 54 A/H#N# flu cases 54 Ebola virus 54 BTV1 54 H#N# avian 54 domesticated birds 54 LPAI H#N# 54 Ebola fever 54 mosquito borne illness 54 swine Flu 54 bird flu virus mutates 54 Monkeypox 54 Birdflu 54 swine flue 53 Marburg hemorrhagic fever 53 ravaged poultry flocks 53 human metapneumovirus 53 Eastern Equine Encephalitis 53 coronavirus 53 swine influenza viruses 53 avian flu outbreak 53 pathogenic strains 53 low pathogenic strain 53 streptococcus suis bacteria 53 Avian Influenza AI 53 deadly Hendra virus 53 H5 N1 53 H#N# influenza 53 H7 subtypes 53 chikungunya virus 53 highly pathogenic strains 53 pandemic H#N# 53 salmonella 53 Rift Valley fever 53 E. coli STEC 53 Salmonella saintpaul 53 H#N# isolates 53 ebola virus 53 hemorrhagic fever 53 H5NI bird flu 53 chicken flocks 53 H5 avian influenza 53 rabies 53 vaccinating poultry 53 Japanese Encephalitis JE 53 O# strain 53 drug resistant superbug 53 virus mutating 53 H#N# Virus 52 influenza pandemic 52 pandemic influenza virus 52 arenavirus 52 Hantavirus 52 BTV8 52 E. coli strain 52 strain mutates 52 low pathogenic H5 52 flu pandemic 52 salmonella infection 52 H7 viruses 52 bird flu mutates 52 bird flu pandemic 52 wild poliovirus 52 deadly Ebola virus 52 Eastern equine encephalitis 52 West Nile 52 HIN1 virus 52 pox virus 52 infected fowl 52 pandemic 52 equine encephalitis 52 CHIKV 52 E.coli bacteria 52 streptococcus suis 52 atypical pneumonia 52 H5 strains 52 birdflu outbreak 52 E.coli bug 52 H1 N1 52 Virologists 52 West Nile Virus 52 Marburg epidemic 52 novel H#N# influenza 52 mosquito borne viruses 51 flu outbreak 51 Typhoid fever 51 foodborne pathogen 51 Ebola haemorrhagic fever 51 Swine flu 51 viral haemorrhagic fever 51 Tamiflu resistant 51 Avian Bird Flu 51 Dengue fever 51 prion disease 51 Swine flue 51 H1NI 51 A/H#N# flu vaccine 51 influenza subtypes 51 Influenza 51 Highly Pathogenic Avian Influenza 51 AH#N# flu 51 A/H#N# pandemic 51 E coli O# 51 Rift Valley Fever 51 avian influenza H#N# virus 51 flu 51 pathogenic H#N# 51 lethal Ebola virus 51 avian viruses 51 Avian influenza H#N# 51 Chikungunya 51 H1 N1 virus 51 H#N# Bird Flu 51 avian H#N# 51 disease FMD 51 simian foamy virus 51 Avian Influenza H#N# 51 Swine Influenza 51 infecting humans 51 H7 bird flu 51 HINI virus 51 Ebola hemorrhagic fever 51 glanders 51 chickens ducks 51 virus mutates 51 pandemic H#N# influenza 51 Nipah virus 51 PB2 gene 51 avian strain 51 SARS virus 51 infect humans 51 EEE virus 50 pathogenic avian influenza 50 CCHF virus 50 low pathogenic avian 50 dengue virus 50 deadly Marburg virus 50 virus subtype 50 N#H# virus 50 Pneumonic plague 50 serotype 50 dengue viruses 50 Bovine Spongiform Encephalopathy 50 eastern equine encephalitis 50 poultry 50 canine influenza 50 whooping cough 50 tick borne 50 avian H#N# virus 50 avian bird flu 50 low pathogenic H#N# 50 seasonal influenzas 50 tularemia 50 antibiotic resistant superbugs 50 migratory fowl 50 PRRS 50 Bovine tuberculosis 50 SARS coronavirus 50 WNV 50 Streptococcus suis bacteria 50 Avian Influenza Bird Flu 50 mad cow disease 50 chikungunya fever 50 Swine Flu 50 outbreak 50 influenza strains 50 mumps outbreak 50 equine influenza virus 50 pathogenic avian flu 50 Canine Influenza 50 Japanese encephalitis 50 pandemic influenza 50 parvo virus 50 A/H#N# swine flu 50 H#n# 50 bluetongue disease 50 respiratory syndrome 50 WSN/# 50 variant CJD 50 contagious disease 50 swine flu outbreak 50 zoonotic diseases 50 influenza viruses circulating 50 Sars coronavirus 50 H#N# virus mutates 50 Nipah 50 poliovirus 50 pandemic flu 49 tiger mosquito 49 wild swans 49 chickens geese 49 Danube delta 49 migratory swans 49 EV# virus 49 bluetongue 49 zoonotic disease 49 Hendra viruses 49 Bubonic plague 49 low pathogenic strains 49 Marburg outbreak 49 avian influenza AI 49 campylobacteriosis 49 Highly pathogenic avian influenza 49 porcine reproductive 49 Hendra virus infection 49 swine flu pandemic 49 zoonoses diseases 49 bivalent vaccine 49 A/H#N# strain 49 Nidom 49 Shigella dysentery 49 seasonal flus 49 Influenza Type 49 superstrain 49 FeLV 49 mutant strain 49 Ebola outbreaks 49 Swine Fever 49 mosquito borne 49 skunk rabies 49 Seasonal influenza 49 pathogenic viruses 49 Parvovirus 49 west nile 49 marburg 49 Creutzfeldt Jakob Disease 49 superbug 49 Rabies 49 EHEC 49 tick borne disease 49 sylvatic plague 49 canine distemper virus 49 H#Y mutation 49 Hepatitis E 49 Swine Flu H#N# 49 wild mute swans 49 highly contagious 49 Salmonella 49 Measles outbreak 49 viral strains 49 raccoon rabies 49 migratory wildfowl 49 pathogenic virus 49 hog cholera 49 PCV2 49 shigella bacteria 49 flu epidemic 49 H#N# Influenza 49 reassorted 49 Swine influenza 49 culling poultry 49 H#N# virus mutating 48 PCV1 48 Lubroth 48 canine rabies 48 E.Coli 48 bacterial strains 48 Drug resistant strains 48 Haiti cholera epidemic 48 disease 48 monkeypox outbreak 48 feline distemper 48 H#N# Influenza virus 48 pseudorabies 48 H#N# pandemic 48 Bird Flu Virus 48 H#N# influenza viruses 48 H#N# Avian Influenza 48 WNV infection 48 Canine influenza 48 salmonella bacteria 48 swine flu epidemic 48 Tularemia 48 strep germ 48 CWD 48 Tamiflu resistant strains 48 vCJD 48 H#N# swine 48 chickenpox virus 48 Lassa fever 48 equine herpes virus 48 Salmonella Saintpaul strain 48 Whooping cough 48 vaccinate poultry 48 midge borne 48 masked palm civets 48 measles epidemic 48 vaccinating chickens 48 anaplasmosis 48 AH#N# flu virus 48 backyard flocks 48 prion diseases 48 Dengue virus 48 h#n# virus 48 avian flu epidemic 48 domesticated fowl 48 atypical scrapie 48 Salmonellosis 48 Variant CJD 48 canine parvovirus 48 measles outbreak 48 form easily transmissible 48 mosquito borne viral 48 Listeria bacteria 48 Influenza A/H#N# virus 48 Salmonella enteritidis 48 Salmonella bacteria 48 babesiosis 48 variant Creutzfeld Jakob 48 hendra virus 48 listeria 48 H#N# strain mutates 48 Sinovac vaccine 48 Yandovka 48 latent TB 48 St. Louis Encephalitis 48 borne diseases 48 H7 avian influenza 48 Hendra virus 48 salmonella strain 48 Creutzfeldt Jakob 47 avian influenza pandemic 47 cholera bacterium 47 falciparum malaria 47 viral subtypes 47 hemorrhagic fevers 47 hemorrhagic dengue 47 Burkholderia pseudomallei 47 avian flu outbreaks 47 Campylobacter 47 antibiotic resistant superbug 47 Confirms Bird Flu 47 mosquito transmitted 47 O# H7 47 epizootic 47 pertussis 47 inactivated vaccines 47 Drug resistant tuberculosis 47 Flu 47 citrus greening disease 47 ravaging poultry stocks 47 PMWS 47 Ebola vaccine 47 meningococcal bacteria 47 pig herds 47 Avian Flu Virus 47 Avian Influenza Virus 47 mousepox 47 Kandun 47 flu A/H#N# 47 E.coli infection 47 mosquito borne encephalitis 47 zoonosis 47 swine brucellosis 47 civets 47 arboviruses 47 Enterovirus 47 swine fever 47 calicivirus 47 trichinosis 47 equine piroplasmosis 47 salmonellosis outbreak 47 Influenza Virus 47 Leptospirosis 47 bovine spongiform encephalopathy BSE 47 Campylobacter bacteria 47 poultry farms 47 h#n# 47 Dr Landeg 47 Shigella bacteria 47 Listeriosis 47 Severe Acute Respiratory Syndrome 47 Respiratory Syndrome PRRS 47 Shigella 47 mumps epidemic 47 Bird Flu Strain 47 Kubu Simbelang village 47 salmonella bacterium 47 respiratory viruses 47 Saintpaul 47 swine herds 47 Brucella abortus 47 meningococcemia 47 Flu pandemic 47 A/H#N# Flu 47 waterborne parasite 47 Ebola epidemic 47 Lassa fever virus 47 Raccoon rabies 47 enteroviruses 47 receptor specificity 47 Poliomyelitis 47 Mosquito borne 47 meningitis outbreak 47 oseltamivir Tamiflu 47 wild fowl 47 P. falciparum 47 canine distemper 47 easily transmissible 47 virus RavMonE.exe 47 Influenza viruses 47 falciparum 47 reassortant 47 H#N# virus mutated 47 pandemic influenza viruses 46 HINI 46 RVF virus 46 dengue epidemic 46 arenaviruses 46 Nipah Virus 46 disease brucellosis 46 infected mosquitoes 46 civet cats 46 tuberculosis TB 46 vesicular stomatitis 46 Pandemic H#N# 46 hantavirus 46 reassortant viruses 46 vaccine 46 porcine circovirus 46 ESBL 46 Scrapie 46 H5 avian 46 Listeria 46 pandemic influenza H#N# 46 Cholera epidemic 46 S. Typhimurium 46 Yersinia enterocolitica 46 plague bacterium Yersinia 46 E. coli bacterial infections 46 Parvo Virus 46 HIN1 46 H#N# Flu 46 H1N 46 vast poultry flocks 46 official Turan Buzgan 46 M. ulcerans 46 contagious equine metritis 46 seasonal influenza 46 Maliuc 46 influenza AH#N# 46 drug resistant superbugs 46 albopictus 46 E. coli 46 Japanese Encephalitis 46 Uyeki 46 smallpox virus 46 Sars virus 46 E. Coli 46 H#N# Swine Flu 46 bacterium Yersinia pestis 46 Crimean Congo Hemorrhagic Fever 46 superbug NDM 1 46 subtype H#N# 46 avian flu pandemic 46 Salmonella typhi 46 pathogen 46 anthrax bacteria 46 salmonella infections 46 Listeria monocytogenes bacterium 46 Shigellosis 46 Adenovirus 46 Oinouses 46 Intestinal worms 46 Bluetongue 46 tuberculosis 46 bacterium 46 salmonellosis 46 M. leprae 46 parasitic disease 46 Wild Polio Virus 46 Salmonella enterica serovar 46 Hariadi Wibisono 46 Whooping Cough 46 Porcine Circovirus 46 SARS 46 serotypes 46 itch mite 46 mutates rapidly 46 parainfluenza virus 46 E.coli O# 46 decimated poultry flocks 46 malaria Plasmodium falciparum 46 H#N# flu pandemic 46 salmonella enteritidis 46 Crimean Congo Haemorrhagic Fever 46 mass culls 46 avian influenzas 46 vaccines 46 Swine flu viruses 46 PRRS virus 46 Hanta virus 46 fowl cholera 46 Salmonella enterica 46 infective agent 46 H1NI virus 46 bovine tuberculosis 46 Kim Chang seob 46 shigella 46 Highly Pathogenic 46 O# H7 strain 46 bacteria streptococcus suis 46 myrtle rust 46 measles 46 equine WNV 46 sporadic CJD 46 cholera outbreak 46 lethal H#N# avian 46 enterovirus 46 mutating virus 46 Friedrich Loeffler Institute 46 toxoplasmosis 46 Chronic Wasting Disease 46 mad cow 46 Streptococcus pneumoniae bacteria 46 tick borne illness 46 H5 variant 46 culex mosquito 46 wart virus 46 drug resistant strains 46 avian cholera 46 psittacosis 46 avian flue 46 salmonella typhi 46 bacterium Listeria monocytogenes 46 Highly contagious 46 viral hemorrhagic septicemia VHS 46 viral hemorrhagic fevers 46 TSEs 46 disease vCJD 46 wild poliovirus type 46 Haiti cholera outbreak 46 vibrio cholera 46 lassa fever 46 Haemophilus influenza 46 pertussis whooping cough 46 Romania Danube delta 45 Cerebro Spinal Meningitis CSM 45 banned stimulant Methylexanemine 45 coronaviruses 45 Cabir virus 45 EHEC infections 45 dengue haemorrhagic fever DHF 45 chickens ducks geese 45 Mad Cow disease 45 dengue 45 coccidiosis 45 Shiga toxin producing 45 Mumps outbreak 45 TB bacillus 45 swine avian 45 Highly pathogenic H#N# 45 persistent fever cough 45 pet prairie dogs 45 antibiotic resistant bacteria 45 hantavirus infection 45 St. Louis encephalitis 45 S OIV 45 smallpox 45 Bird Flu Cases 45 pneumococcus 45 ciguatera 45 Avian flu outbreaks 45 Crimean Congo hemorrhagic fever 45 Psittacosis 45 meningococcus 45 Meningococcemia 45 feline immunodeficiency virus 45 Trichinella 45 Chronic wasting disease 45 coli 45 encephalitis 45 Foodborne illness 45 E.coli O# H7 45 Mycobacterium bovis 45 Zaire subtype 45 influenzas 45 swine flu vaccine 45 trivalent vaccine 45 whooping cough outbreak 45 AH#N# 45 serratia 45 E Coli 45 SIVcpz 45 Staphylococcus aureus bacteria 45 Tamiflu 45 pandemic influenza A/H#N# 45 Bovine Spongiform Encephalopathy BSE 45 Bird Flue 45 coxsackie virus 45 antibiotic resistant bacterium 45 listeria bacteria 45 influenza A/H#N# infection 45 swine viruses 45 uh erh eye 45 Hendra Virus 45 misshapen protein 45 dengue haemorrhagic fever 45 enterohaemorrhagic E.coli 45 zoonoses 45 madcow 45 Cryptosporidiosis 45 lymphogranuloma venereum 45 Tri Satya Putri 45 Highly pathogenic 45 avian flus 45 single celled parasite 45 Staphylococcus aureus MRSA 45 super spreaders 45 migrating wildfowl 45 retrovirus 45 staphylococcus bacteria 45 Cikelet 45 bacterium Staphylococcus aureus 45 Ebola Marburg 45 E.coli 45 Mouth Disease 45 bacteria Listeria monocytogenes 45 salmonella contamination 45 Nosema ceranae 45 west nile virus 45 inactivated strain 45 rinderpest 45 oseltamivir resistant 45 Parvo 45 seasonal flu 45 viral hemorrhagic septicemia 45 influenza pandemics 45 artemisinin resistance 45 sparking pandemic 45 Meningococcal meningitis 45 infected fleas 45 Kiziksa 45 Equine herpes 45 infected prairie dogs 45 Equine Herpes Virus 45 Bovine TB 45 HFMD 45 bacterium Neisseria meningitidis 45 pneumococcal strains 45 parasite Plasmodium falciparum 45 mumps 45 Salmonella Enteritidis SE 45 Salmonella infections 45 TB bacterium 45 viruses 45 Calicivirus 45 E. coli bacteria 45 Meningococcal Meningitis 45 parvovirus 45 prepandemic 45 SARS CoV 45 strain transmissible 45 infected cow 45 Aedes albopictus 45 viral haemorrhagic fevers 45 FMD outbreak 45 HINI influenza 45 VZV 45 Hib meningitis 45 Rotavirus 45 zoonotic 45 Vibrio parahaemolyticus 45 FMD outbreaks 45 Salmonella typhimurium 45 Marburg Virus 45 infected midges 45 Flu viruses 45 parvo 45 H#N# highly pathogenic 45 Africanized honey bees 45 African Horse Sickness 45 Asian soybean rust 45 Dengue epidemic 45 hemorrhagic dengue fever 45 Venezuelan equine encephalitis 45 Noro virus 45 pathogenicity 45 prion protein gene 45 Deadly Bird Flu 45 chickens 45 Bui Quang Anh 45 alphavirus 45 Listeria monocytogenes bacteria 45 avian H#N# influenza 45 Weybridge England 44 Human Papillomavirus 44 chikungunya 44 MRSA bacteria 44 campylobacter bacteria 44 P. vivax 44 neuraminidase inhibitor 44 botulism 44 Babesia 44 Abnormal radiation 44 Ceamurlia de Jos 44 oubreak 44 Lyme disease 44 civet cat 44 meningitis epidemic 44 Naegleria fowleri nuh ee 44 Lyme disease Rocky Mountain 44 E coli bacteria 44 Amantadine 44 Swine Flu Virus 44 Crimean Congo haemorrhagic fever 44 PCVAD 44 pneumococcal bacteria 44 A/H#N# vaccine 44 Whooping cough pertussis 44 Jakob disease 44 naturally occurring anthrax 44 Vibrio cholerae 44 botulism outbreak 44 contracted monkeypox 44 paramyxoviruses 44 hMPV 44 variant Creutzfeldt Jakob 44 flu pandemics 44 DENV 44 inactivated vaccine 44 pathogens 44 salmonella serotype 44 flu viruses mutate 44 Antibiotic resistant bacteria 44 atypical pneumonia outbreak 44 bacterial meningitis 44 Leptospira 44 legionnaires disease 44 Staph bacteria 44 MDR tuberculosis 44 paralytic illness 44 bacterial strain 44 Tainted spinach 44 BRSV 44 FMD virus 44 low pathogenic H7 44 paramyxovirus 44 Dengue 44 chytrid fungus 44 Nile Virus 44 Plasmodium knowlesi 44 retroviruses 44 spokesman Alexei Alexeyenko 44 multidrug resistant 44 seasonal influenza viruses 44 multidrug resistant strains 44 undulant fever 44 FELV 44 zoonotic infections 44 Epizootic Hemorrhagic Disease 44 ehrlichiosis 44 fowl 44 Bird Flu Found 44 XDR TB 44 Salmonella infection 44 H#N# Swine flu 44 CDC Swine flu 44 E.coli outbreak 44 Cholera outbreak 44 cryptosporidium 44 Smallpox vaccine 44 feline leukemia virus 44 bovine TB 44 Listeria infections 44 sars 44 viral isolates 44 Chlamydia trachomatis 44 measles virus 44 hanta virus 44 La Crosse encephalitis 44 Africanized bee 44 Swine influenza viruses 44 Escherichia Coli 44 S Typhi 44 paralytic polio 44 Mad Cow Disease 44 Salmonella Saintpaul 44 foodborne diseases 44 Heishan county 44 Escherichia coli O# 44 Poliovirus 44 Tamiflu oseltamivir 44 West Nile encephalitis 44 Parvo virus 44 hantaviruses 44 A/H#N# vaccines 44 Aedes mosquito 44 C. gattii 44 Canine distemper 44 H#N# Flu Virus 44 feline panleukopenia 44 Salmonella spp 44 malaria parasite 44 quarantinable disease 44 Swine flu pandemic 44 Veterinary Laboratory 44 tick borne encephalitis 44 Infected mosquitoes 44 dengue mosquito 44 contagion 44 toxic algae bloom 44 Philip Tod 44 staphylococcus aureus 44 Virulent swine flu 44 E coli 44 VLP vaccine 44 mosquito borne diseases 44 bacterium Francisella tularensis 44 HPAI H#N# virus 44 Novel H#N# influenza 44 smallpox anthrax 44 serogroup B 44 Chlamydophila pneumoniae 44 food borne pathogen 44 CRKP 44 bacteria Pseudomonas aeruginosa 44 Salmonella contamination 44 campylobacter jejuni 44 resistant bacteria 44 ZEBOV 44 swine flus 44 variola virus 44 typhoid fever 44 SWINE flu 44 Equine Herpes 44 waterborne illness 44 Viral Hemorrhagic Septicemia 44 human papillomavirus HPV 44 typhimurium 44 D#G 44 lepto 44 Equine influenza 44 amantadine 44 Spanish flu pandemic 44 H#N# clade 44 reverse vaccinology 44 viruses mutate 44 cowpox virus 44 Vibrio 44 Naegleria 44 Trypanosoma 44 tainted tomatoes 44 NS1 protein 44 S. suis 44 latent tuberculosis 44 unadjuvanted version 44 virulent strains 44 H#Y 44 Meningococcal disease 44 Bird Flu Case 44 Plasmodium species 44 HN# [002] 44 streptococcus bacteria 44 contagious diseases 44 bird flus 44 influenza vaccines 44 NDM 1 44 Acute diarrhea 44 Staphylococcus aureus bacterium 44 rabid skunk 44 swine influenza A/H#N# 44 whooping cough epidemic 44 metapneumovirus 44 AH#N# influenza