Bacillus anthracis is a bacteria that causes the disease anthrax.
Links for Category A:
-   
    
  http://www.microbes.info/resources/153/anthrax
 -   
    
  
Chapare mammarenavirus is a virus that belongs to the virus family Arenaviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/1114/chapare-mammarenavirus -   
    
  
Clostridium botulinum is a bacteria that causes botulism.
http://www.microbes.info/resources/512/clostridium-botulinum -   
    
  
Dengue virus is a virus that belongs to the virus family Flaviviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/682/dengue-virus -   
    
  
Ebola virus is a virus that belongs to the virus family Filoviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/676/ebola-virus -   
    
  
Francisella tularensis is a bacteria that causes tularemia.
http://www.microbes.info/resources/527/francisella-tularensis -   
    
  
Guanarito mammarenavirus is a virus that belongs to the virus family Arenaviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/1113/guanarito-mammarenavirus -   
    
  
Hantaviruses are viruses that belongs to the virus family Bunyaviridae. These viruses cause hanta pulmonary syndrome, rift valley fever and crimean congo hemorrhagic fever.
http://www.microbes.info/resources/656/hantavirus -   
    
  
Junin mammarenavirus is a virus that belongs to the virus family Arenaviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/643/junin-mammarenavirus -   
    
  
Lassa mammarenavirus is a virus that belongs to the virus family Arenaviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/644/lassa-mammarenavirus -   
    
  
Lujo mammarenavirus is a virus that belongs to the virus family Arenaviridae. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/1115/lujo-mammarenavirus -   
    
  
Machupo mammarenavirus is a virus belonging to the Arenaviridae virus family. This virus causes viral hemorrhagic fever.
http://www.microbes.info/resources/1112/machupo-mammarenavirus -   
    
  
Marburgvirus is a virus genus that belongs to the virus family Filoviridae. Viruses belonging to this genus causes viral hemorrhagic fever.
http://www.microbes.info/resources/677/marburgvirus -   
    
  
Variola virus belongs to the virus family Poxviridae and causes the disease smallpox.
http://www.microbes.info/resources/742/variola-virus -   
    
  
Yersinia pestis is a bacteria that causes plague.
http://www.microbes.info/resources/569/yersinia-pestis 


