0000007948 00000 n This study was supported by funding from the Project for Key Medicine Discipline Construction of Guangzhou Municipality (grant no. endobj 9 Serial interval of novel coronavirus (COVID-19) infections. Potential presymptomatic transmission of SARS-CoV-2, Zhejiang Province, China, 2020. We estimated secondary attack rate (SAR) and 95% CI based on the proportion of COVID-19 incidence among close contacts. endobj 0000008938 00000 n Second or lower in rank or importance; not primary: concerns that are secondary. If you have previously obtained access with your personal account, please log in. Please check your email for instructions on resetting your password. [null null 1870 0 R null null null 1871 0 R null null null 1872 0 R null null null 1873 0 R null null null 1874 0 R null null null 1875 0 R null 1876 0 R null null 1877 0 R null null null 1878 0 R null null null 1879 0 R null null null 1880 0 R null null null 1881 0 R null null null 1882 0 R null 1883 0 R null null 1884 0 R null null null 1885 0 R null null null 1886 0 R null null null 1887 0 R null null null 1888 0 R null null null 1889 0 R null null null null 1890 0 R null 1891 0 R 331 0 R 332 0 R null null 1892 0 R null null null 1893 0 R null null null 1894 0 R null null null 1895 0 R null null null 1896 0 R null null null 1897 0 R null 1898 0 R null null 1899 0 R null null null 1900 0 R null null null 1901 0 R null null null 1902 0 R null null null 1903 0 R null null null 1904 0 R null 1905 0 R null null 1906 0 R null null null 1907 0 R null null null 1908 0 R null null null 1909 0 R null null null 1910 0 R null null null 1911 0 R null null null null 1912 0 R null 1913 0 R 334 0 R 335 0 R null null 1914 0 R null null null 1915 0 R null null null 1916 0 R null null null 1917 0 R null null null 1918 0 R null null null 1919 0 R null 1920 0 R null null 1921 0 R null null null 1922 0 R null null null 1923 0 R null null null 1924 0 R null null null 1925 0 R null null null 1926 0 R null 1927 0 R null null 1928 0 R null null null 1929 0 R null null null 1930 0 R null null null 1931 0 R null null null 1932 0 R null null null 1933 0 R null null null null 1934 0 R null 1935 0 R 337 0 R 338 0 R null null 1936 0 R null null null 1937 0 R null null null 1938 0 R null null null 1939 0 R null 1940 0 R null null 1941 0 R null null null 1942 0 R null null null 1943 0 R null null null 1944 0 R null 1945 0 R null null 1946 0 R null null null 1947 0 R null null null 1948 0 R null null null 1949 0 R null null null null 1950 0 R null null null 1951 0 R null null null 1952 0 R null null null 1953 0 R null null null null 1954 0 R null null null 1955 0 R null null null 1956 0 R null null null 1957 0 R null null null null 1958 0 R null null null 1959 0 R null null null 1960 0 R null null null 1961 0 R null null null null 1962 0 R null null null 1963 0 R null null null 1964 0 R null null null 1965 0 R null null null null 1966 0 R null null null 1967 0 R null null null 1968 0 R null null null 1969 0 R null null null null 1970 0 R null null null 1971 0 R null null null 1972 0 R null null null 1973 0 R null null null null 1974 0 R null null null 1975 0 R null null null 1976 0 R null null null 1977 0 R null null null null 1978 0 R null null null 1979 0 R null null null 1980 0 R null null null 1981 0 R null null null null 1982 0 R null null null 1983 0 R null null null 1984 0 R null null null 1985 0 R null 1986 0 R 340 0 R 341 0 R 342 0 R 343 0 R 344 0 R 345 0 R 346 0 R 347 0 R 348 0 R] دوهم، ثانوي: فرعي: منځنى (لكه ښوونځى): كم اهميته، ټيټ: روستنى: ددويمې مرحلې: دمرغه ددويم بندبڼكې: لاس لاندې، داثر لاندې, folkeskolens øverste trin; skole for 12-18-årige, ساتل، ملاتړ (حمايه) كول: تكيه كول، درول، زغمل، ګالل، په غاړه اخيستل: برابرول، تيارول. endobj
527 0 obj <> In epidemiology, the attack rate is the percentage of an at-risk population that contracts the disease during a specified time interval.
endobj
The SAR among household contacts was 16.1% and was 1.1% for social contacts, and 0 for workplace contacts. 533 0 obj 507 0 obj I�|�#�|oN7 ��(���"�@��Ow��k(^Ƨ�O��"��S.�X�NjL���e�x�>�fx��P�������OI*�(�ľe��J~�o>��@&�HCY����X*HH�ӑ���%Q��¢I �Ȝi��H�+^`s�˨�Z� �r�hO� '��a�>��D��?�����s?t~�'�W���W��?��7������Tޠ�W~j��~���u�X������3{��)�~���\�G��mV�|7-��r��n7{Ei�����x�ziv ��H�=qG2�B� �o�?ʀ �
endobj the secondary attack rate, serial interval, and asymptomatic infection . 2. 0000001006 00000 n We analyzed contact-tracing surveillance data collected during January 28–March 15, 2020, to explore the secondary attack rate from different types of contact with persons presymptomatic for COVID-19 in Guangzhou, China. 3. [492 0 R 493 0 R 494 0 R 495 0 R] endobj February is the second month of the year; She's a member of the school's second swimming team. Emerg Infect Dis. adj. <> endobj [202 0 R 203 0 R 204 0 R 205 0 R 206 0 R 103 0 R] 0000001359 00000 n The spread of infection from an index case (the initial case, i.e.
499 0 obj 2295 0 obj [452 0 R 453 0 R 454 0 R 455 0 R 456 0 R 457 0 R 458 0 R 459 0 R 460 0 R 461 0 R 462 0 R 463 0 R 464 0 R 465 0 R 466 0 R 467 0 R null 467 0 R 468 0 R 469 0 R 470 0 R 471 0 R 1987 0 R] endobj I want your best work – your second-best is not good enough. Her research interests are health promotion and infectious disease epidemic modeling. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. 502 0 obj [171 0 R 172 0 R 173 0 R 174 0 R 175 0 R 176 0 R 177 0 R 178 0 R 179 0 R 180 0 R 181 0 R 182 0 R 183 0 R 184 0 R]
The secondary attack rate (SAR), defined as the probability that an infection occurs among susceptible people within a specific group (ie, household or close contacts), can provide an indication of how social interactions relate to transmission risk. endobj
[257 0 R 258 0 R 259 0 R 260 0 R 261 0 R 262 0 R 263 0 R 264 0 R 265 0 R 266 0 R 267 0 R] CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. attack rate for consumption of a specified food, calculated as number of cases of disease among people who ate food “X” number of persons who ate food “X” To calculate a measure of association between food “X” and illness, a second attack rate must be calculated for those who did not eat food “X”. endobj 0000004150 00000 n It is a key epidemiologic parameter in infectious diseases that are transmitted by contact.
529 0 obj The study was approved by the ethics committee of Guangzhou Center for Disease Control and Prevention, which granted a waiver for informed consent.