{"doi":"10.1101/2020.07.14.20153643","title":"Epidemiology and transmission dynamics of COVID-19 in two Indian states","abstract":"Abstract Although most COVID-19 cases have occurred in low-resource countries, there is scarce information on the epidemiology of the disease in such settings. Comprehensive SARS-CoV-2 testing and contact-tracing data from the Indian states of Tamil Nadu and Andhra Pradesh reveal stark contrasts from epidemics affecting high-income countries, with 92.1% of cases and 59.7% of deaths occurring among individuals <65 years old. The per-contact risk of infection is 9.0% (95% confidence interval: 7.5-10.5%) in the household and 2.6% (1.6-3.9%) in the community. Superspreading plays a prominent role in transmission, with 5.4% of cases accounting for 80% of infected contacts. The case-fatality ratio is 1.3% (1.0-1.6%), and median time-to-death is 5 days from testing. Primary data are urgently needed from low- and middle-income countries to guide locally-appropriate control measures.","journal":"medRxiv","year":2020,"id":118361,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":101,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9337,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":550349,"name":"Brian Wahl","orcid":"0000-0002-0037-7364","position":1,"is_corresponding":false},{"id":551280,"name":"Shankar Reddy Dudala","orcid":null,"position":2,"is_corresponding":false},{"id":550350,"name":"Kathiresan Gopal","orcid":"0000-0001-5302-8179","position":3,"is_corresponding":false},{"id":278769,"name":"Chandra Mohan","orcid":"0000-0001-7896-5740","position":4,"is_corresponding":false},{"id":551281,"name":"S. Neelima","orcid":null,"position":5,"is_corresponding":false},{"id":551282,"name":"K Sohith Reddy","orcid":null,"position":6,"is_corresponding":false},{"id":81755,"name":"Jayachandran Radhakrishnan","orcid":"0000-0001-6009-1862","position":7,"is_corresponding":false},{"id":317227,"name":"Joseph A. Lewnard","orcid":"0000-0002-8505-8839","position":8,"is_corresponding":false},{"id":322875,"name":"Ramanan Laxminarayan","orcid":"0000-0002-1390-9016","position":0,"is_corresponding":true}],"reference_count":68,"raw_metadata":null,"created_at":"2026-07-18T23:13:58.531532Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}