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Colorized scanning electron micrograph of a human neutrophil ingesting MRSA. Methicillin-resistant Staphylococcus aureus (MRSA) is a group of gram-positive bacteria that are genetically distinct from other strains of Staphylococcus aureus. MRSA is responsible for several difficult-to-treat infections in humans.
The carriage of S. aureus is an important source of hospital-acquired infection (also called nosocomial) and community-acquired MRSA. Although S. aureus can be present on the skin of the host, a large proportion of its carriage is through the anterior nares of the nasal passages [2] and can further be present in the ears. [129]
Problematically, methicillin-resistant Staphylococcus aureus (MRSA) has become a major cause of hospital-acquired infections. MRSA has also been recognized with increasing frequency in community-acquired infections. [7] The symptoms of a staphylococcal infection include a collection of pus, such as a boil or furuncle, or abscess.
MRSA ST398 is resistant to many antimicrobial agents; therefore, treatment options for this strain are limited. [8] However, hospitalization and aggressive treatment to treat the symptoms of MRSA ST398 can be employed. And until more information about antimicrobial susceptibilities are known, the ST398 strain should be treated as MRSA is. [9]
Symptoms include a painful skin rash or mucosal lesions, enlarged lymph nodes, headache, muscle aches, back pain, fatigue and fever. While most people fully recover, some get very sick.
Symptoms may include pus from a wound, redness, swelling, pain, warmth, tachycardia, or tachypnea. [4] Complications can include infection of the bone, tissue death, amputation, or sepsis. [2] They are common and occur equally frequently in males and females. Older people are more commonly affected.
If you have COVID symptoms, test immediately. If you test negative using an at-home test, repeat the test again in 48 hours. If you were exposed to COVID, test at least 5 full days after exposure.
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