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HUMAN TOXOPLASMOSIS OUTBREAKS AND THE AGENT INFECTING FORM. FINDINGS FROM A SYSTEMATIC REVIEW.

Meireles LR, Ekman CC, Andrade jR HF, Luna EJ - Rev. Inst. Med. Trop. Sao Paulo (2015 Sep-Oct)

Bottom Line: There was no gender or age group selection in the outbreaks, which were described more often in the Americas.A large number of individuals were affected when oocysts, associated with soil and water contaminated with cat feces, were considered the transmission source.Such information may be useful in the design and implementation of control strategies.

View Article: PubMed Central - PubMed

Affiliation: Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brasil.

ABSTRACT
Toxoplasmosis, a worldwide highly prevalent zoonotic infection, is transmitted either by the oocysts, from water and soil, or the tissue cysts, in raw or undercooked infected meat, of Toxoplasma gondii. An ongoing debate is whether there are differences between the clinical and epidemiological characteristics of the outbreaks due to one or the other infective form of the agent. We performed a systematic review, recovering 437 reported outbreaks of which 38 were selected. They were complete reports containing ascribed Toxoplasma infecting form, and clinical and demographic data. There was no gender or age group selection in the outbreaks, which were described more often in the Americas. A large number of individuals were affected when oocysts, associated with soil and water contaminated with cat feces, were considered the transmission source. Onset of symptoms occurred early when the infection was ascribed to meat tissue cysts (11.4 ± 6.7 days) with sharpened temporal distribution of cases, while a broader and prolonged appearance of new cases was observed when oocysts in water were the source of the infection (20 ± 7 days, p < 0.001). Such information may be useful in the design and implementation of control strategies.

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Related in: MedlinePlus

- Distribution of reported incubation period in human toxoplasmosis outbreaks according to attributed infective form ofT. gondii. Data from oocysts attributed reports was available only for meal-related outbreaks. Bars represent mean plus standard deviation of the sample.
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f03: - Distribution of reported incubation period in human toxoplasmosis outbreaks according to attributed infective form ofT. gondii. Data from oocysts attributed reports was available only for meal-related outbreaks. Bars represent mean plus standard deviation of the sample.

Mentions: The distribution of the outbreaks' incubation period, according to the attributed infective form of the agent, is presented in Figure 3. As may be seen, a large proportion of oocysts associated outbreaks did not report the incubation period, especially those associated with water, due to the longer survival of this form and difficulty to define the time of ingestion. But the available data was sufficient to show a significantly


HUMAN TOXOPLASMOSIS OUTBREAKS AND THE AGENT INFECTING FORM. FINDINGS FROM A SYSTEMATIC REVIEW.

Meireles LR, Ekman CC, Andrade jR HF, Luna EJ - Rev. Inst. Med. Trop. Sao Paulo (2015 Sep-Oct)

- Distribution of reported incubation period in human toxoplasmosis outbreaks according to attributed infective form ofT. gondii. Data from oocysts attributed reports was available only for meal-related outbreaks. Bars represent mean plus standard deviation of the sample.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4660444&req=5

f03: - Distribution of reported incubation period in human toxoplasmosis outbreaks according to attributed infective form ofT. gondii. Data from oocysts attributed reports was available only for meal-related outbreaks. Bars represent mean plus standard deviation of the sample.
Mentions: The distribution of the outbreaks' incubation period, according to the attributed infective form of the agent, is presented in Figure 3. As may be seen, a large proportion of oocysts associated outbreaks did not report the incubation period, especially those associated with water, due to the longer survival of this form and difficulty to define the time of ingestion. But the available data was sufficient to show a significantly

Bottom Line: There was no gender or age group selection in the outbreaks, which were described more often in the Americas.A large number of individuals were affected when oocysts, associated with soil and water contaminated with cat feces, were considered the transmission source.Such information may be useful in the design and implementation of control strategies.

View Article: PubMed Central - PubMed

Affiliation: Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, SP, Brasil.

ABSTRACT
Toxoplasmosis, a worldwide highly prevalent zoonotic infection, is transmitted either by the oocysts, from water and soil, or the tissue cysts, in raw or undercooked infected meat, of Toxoplasma gondii. An ongoing debate is whether there are differences between the clinical and epidemiological characteristics of the outbreaks due to one or the other infective form of the agent. We performed a systematic review, recovering 437 reported outbreaks of which 38 were selected. They were complete reports containing ascribed Toxoplasma infecting form, and clinical and demographic data. There was no gender or age group selection in the outbreaks, which were described more often in the Americas. A large number of individuals were affected when oocysts, associated with soil and water contaminated with cat feces, were considered the transmission source. Onset of symptoms occurred early when the infection was ascribed to meat tissue cysts (11.4 ± 6.7 days) with sharpened temporal distribution of cases, while a broader and prolonged appearance of new cases was observed when oocysts in water were the source of the infection (20 ± 7 days, p < 0.001). Such information may be useful in the design and implementation of control strategies.

Show MeSH
Related in: MedlinePlus