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  • Pneumococcus - PAHO WHO | Pan American Health Organization
    Pneumococcus is a Gram-positive lancet-shaped diplococcus with a polysaccharide capsule external to the wall According to the capsular antigenic differences, more than 90 serotypes have been identified, of which a limited number cause invasive pneumococcal disease Serotype identification has varied by geographic region, age, and study period; 6 to 11 of the most common serotypes cause
  • Meningococcus - PAHO WHO | Pan American Health Organization
    Neisseria meningitidis (Nm), also known as meningococcus, is an encapsulated Gram-negative diplococcus that can be found intra- or extracellularly in the blood in polymorphonuclear leukocytes Due to differences in composition, there are 13 meningococcal serogroups; six serotypes (A, B, C, W, Y, and X) are usually associated with disease
  • Gonorrhea - PAHO WHO | Pan American Health Organization
    Gonorrhea, caused by Neisseria gonorrhoeae, is the second most common bacterial STI and results in substantial morbidity and economic cost worldwide Gonorrhea is spread by having unprotected vaginal, anal, or oral sex with someone who has gonorrhea, or from mother-to-child during childbirth Correct and consistent use of condoms significantly decreases the risk of sexual transmission
  • Meningococo - OPS OMS | Organización Panamericana de la Salud - PAHO
    La Neisseria meningitidis (Nm), también conocida como meningococo, es un Diplococo Gram-negativo encapsulado, puede encontrarse intra o extracelularmente en la sangre en leucocitos polimorfonucleares Las diferencias en la composición permiten clasificar 13 serogrupos de meningococo siendo que seis serotipos (A, B, C, W, Y, X) se asocian usualmente con enfermedad
  • Report on the epidemiological situation of dengue in the Americas
    In the epidemiological weeks (EW) 21 of 2025, a total of 3,035,646 suspected cases of dengue were reported, resulting in a cumulative incidence of 299 per 100,000 population This represents a decrease of 70% compared to the same period in 2024 and 12% compared to the average of the last 5 years Figure 1 shows the trend of suspected dengue cases as of EW 21
  • World Patient Safety Day 2025 - PAHO WHO | Pan American Health Organization
    World Patient Safety Day calls for global solidarity and concerted action by all countries and international partners to improve patient safety
  • Infecciones respiratorias perinatales y en mujeres embarazadas . . .
    Infecciones respiratorias perinatales y en mujeres embarazadas, incluida la COVID-19
  • Neumococo - OPS OMS | Organización Panamericana de la Salud - PAHO
    El neumococo es un Diplococo Grampositivo lanceolado que posee una capsula polisacarida externa a la pared De acuerdo con las diferencias antigénicas capsulares, se han identificado más de 90 serotipos, de los cuales un número limitado es causante de enfermedad neumocócica invasora La identificación de serotipos ha variado según región geográfica, edad y periodo de estudio; 6 a 11 de
  • Epidemiological alert Chikungunya
    10 February 2026 Between late 2025 and early 2026, there has been a sustained increase in cases of chikungunya in countries and territories in the Americas Region, as well as a resumption of autochthonous transmission in areas that had not reported circulation of the virus for several years Although the observed dynamics may correspond to expected epidemiological patterns in contexts where
  • The Preparedness and Resilience for Emerging Threats (PRET) initiative . . .
    Pandemics are unpredictable, We need to be prepared The PRET initiative promotes a unified strategy for future pandemic preparedness by categorizing pathogens based on their mode of transmission (e g , respiratory, vector-borne, foodborne) and encouraging Member States to utilize existing systems to respond effectively to similar pathogens PRET aims to optimize resources by improving





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