Estimating Asymptomatic and Symptomatic Transmission of the COVID-19 First Few Cases in Selenge Province, Mongolia.

Estimating Asymptomatic and Symptomatic Transmission of the COVID-19 First Few Cases in Selenge Province, Mongolia.

Publication date: Apr 01, 2024

Following the first locally transmitted case in Sukhbaatar soum, Selenge Province, we aimed to investigate the ultimate scale of the epidemic in the scenario of uninterrupted transmission. This was a prospective case study following the locally modified WHO FFX cases generic protocol. A rapid response team collected data from November 14 to 29, 2020. We created a stochastic process to draw many transmission chains from this greater distribution to better understand and make inferences regarding the outbreak under investigation. The majority of the cases involved household transmissions (35, 52. 2%), work transmissions (20, 29. 9%), index (5, 7. 5%), same apartment transmissions (2, 3. 0%), school transmissions (2, 3. 0%), and random contacts between individuals transmissions (1, 1. 5%). The posterior means of the basic reproduction number of both the asymptomatic cases and the presymptomatic cases (1. 35 [95% CrI 0. 88-1. 86] and 1. 29 [95% CrI 0. 67-2. 10], respectively) were lower than that of the symptomatic cases (2. 00 [95% Crl 1. 38-2. 76]). Our study highlights the heterogeneity of COVID-19 transmission across different symptom statuses and underscores the importance of early identification and isolation of symptomatic cases in disease control. Our approach, which combines detailed contact tracing data with advanced statistical methods, can be applied to other infectious diseases, facilitating a more nuanced understanding of disease transmission dynamics.

Concepts Keywords
Apartment Bayesian statistics
Influenza coronavirus infections/epidemiology*
Mongolia COVID‐19*/epidemiology
November family characteristics
Presymptomatic field epidemiology
human*
influenza
pandemics*
SARS‐CoV‐2

Semantics

Type Source Name
disease MESH COVID-19
disease VO protocol
disease IDO process
drug DRUGBANK Tropicamide
pathway REACTOME Reproduction
disease IDO symptom
disease IDO contact tracing
disease MESH infectious diseases
disease MESH coronavirus infections
disease MESH influenza

Original Article

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