Meningitis is an acute contagious disease causing inflammation of the outer covering of the brain (meninges) and upper spinal column. The two primary kinds of meningitis are viral and bacterial, but it may be caused by other microorganisms including fungal, and parasitic. Meningitis may also be caused by other diseases, like Lyme disease that can affect the lining of the brain.
Cellulitis is a bacterial infection that grows below the skin surface and can cause permanent tissue damage. It is normally caused by the bacteria Streptococcus pyogenes or Staphylococcus aureus, which commonly enters the body through a cut or other break in the skin. However, there are reported cases of cellulitis where the skin was not broken, and typically involve people who have a weak immune system or have been diagnosed with diabetes. These people are also more likely to experience serious effects from cellulitis and may even get cellulitis again.
Serratia Marcescens is a human pathogenic species of Serratia. It is sometimes linked to disease in humans. The disease is commonly known as either Serratia plymuthica, Serratia liquefaciens, Serratia rubidaea, Serratia odorifera, or Serratia fonticola.