全文获取类型
收费全文 | 13000篇 |
免费 | 768篇 |
国内免费 | 207篇 |
专业分类
耳鼻咽喉 | 105篇 |
儿科学 | 756篇 |
妇产科学 | 280篇 |
基础医学 | 1391篇 |
口腔科学 | 203篇 |
临床医学 | 1439篇 |
内科学 | 2100篇 |
皮肤病学 | 304篇 |
神经病学 | 176篇 |
特种医学 | 148篇 |
外科学 | 1054篇 |
综合类 | 1230篇 |
预防医学 | 2979篇 |
眼科学 | 131篇 |
药学 | 1179篇 |
7篇 | |
中国医学 | 123篇 |
肿瘤学 | 370篇 |
出版年
2024年 | 14篇 |
2023年 | 174篇 |
2022年 | 543篇 |
2021年 | 912篇 |
2020年 | 550篇 |
2019年 | 480篇 |
2018年 | 456篇 |
2017年 | 446篇 |
2016年 | 504篇 |
2015年 | 529篇 |
2014年 | 881篇 |
2013年 | 1064篇 |
2012年 | 833篇 |
2011年 | 832篇 |
2010年 | 697篇 |
2009年 | 627篇 |
2008年 | 467篇 |
2007年 | 524篇 |
2006年 | 477篇 |
2005年 | 389篇 |
2004年 | 381篇 |
2003年 | 257篇 |
2002年 | 250篇 |
2001年 | 208篇 |
2000年 | 172篇 |
1999年 | 156篇 |
1998年 | 137篇 |
1997年 | 137篇 |
1996年 | 87篇 |
1995年 | 81篇 |
1994年 | 62篇 |
1993年 | 56篇 |
1992年 | 55篇 |
1991年 | 46篇 |
1990年 | 47篇 |
1989年 | 55篇 |
1988年 | 40篇 |
1987年 | 49篇 |
1986年 | 41篇 |
1985年 | 57篇 |
1984年 | 24篇 |
1983年 | 22篇 |
1982年 | 31篇 |
1981年 | 15篇 |
1980年 | 14篇 |
1979年 | 16篇 |
1978年 | 17篇 |
1976年 | 13篇 |
1975年 | 14篇 |
1974年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
Katrin Gaardbo Kuhn Anne Kathrine Hvass Annette Hartvig Christiansen Steen Ethelberg Susan Alice Cowan 《Emerging infectious diseases》2021,27(4):1133
Campylobacteriosis is a disease of worldwide importance, but aspects of its transmission dynamics, particularly risk factors, are still poorly understood. We used data from a matched case-control study of 4,269 men who have sex with men (MSM) and 26,215 controls, combined with national surveillance data on Campylobacter spp., Salmonella spp., and Shigella spp., to calculate matched odds ratios (mORs) for infection among MSM and controls. MSM had higher odds of Campylobacter (mOR 14, 95% CI 10–21) and Shigella (mOR 74, 95% CI 27–203) infections, but not Salmonella (mOR 0.2, 95% CI 0–13), and were less likely than controls to have acquired Campylobacter infection abroad (χ2 = 21; p<0.001). Our results confirm that sexual contact is a risk factor for campylobacteriosis and also suggest explanations for unique features of Campylobacter epidemiology. These findings provide a baseline for updating infection risk guidelines to the general population. 相似文献
132.
Claudine A. Kombila Koumavor Eric Elguero Eric M. Leroy 《Emerging infectious diseases》2021,27(2):672
Although Zika virus (ZIKV) circulates in sub-Saharan Africa, no case of ZIKV-associated microcephaly has thus far been reported. Here, we report evidence of a possible association between a 2007 outbreak of febrile illness and an increase in microcephaly and possibly ZIKV infection in Gabon. 相似文献
133.
Adrian Trenholme Rachel Webb Shirley Lawrence Sharon Arrol Susan Taylor Shanthi Ameratunga Catherine A. Byrnes 《Emerging infectious diseases》2021,27(2):641
In March 2020, a national elimination strategy for coronavirus disease was introduced in New Zealand. Since then, hospitalizations for lower respiratory tract infection among infants <2 years of age and cases of respiratory syncytial or influenza virus infection have dramatically decreased. These findings indicate additional benefits of coronavirus disease control strategies. 相似文献
134.
Lara J. Akinbami Philip A. Chan Nga Vuong Samira Sami Dawn Lewis Philip E. Sheridan Susan L. Lukacs Lisa Mackey Lisa A. Grohskopf Anita Patel Lyle R. Petersen 《Emerging infectious diseases》2021,27(3):823
Healthcare personnel are recognized to be at higher risk for infection with severe acute respiratory syndrome coronavirus 2. We conducted a serologic survey in 15 hospitals and 56 nursing homes across Rhode Island, USA, during July 17–August 28, 2020. Overall seropositivity among 9,863 healthcare personnel was 4.6% (95% CI 4.2%–5.0%) but varied 4-fold between hospital personnel (3.1%, 95% CI 2.7%–3.5%) and nursing home personnel (13.1%, 95% CI 11.5%–14.9%). Within nursing homes, prevalence was highest among personnel working in coronavirus disease units (24.1%; 95% CI 20.6%–27.8%). Adjusted analysis showed that in hospitals, nurses and receptionists/medical assistants had a higher likelihood of seropositivity than physicians. In nursing homes, nursing assistants and social workers/case managers had higher likelihoods of seropositivity than occupational/physical/speech therapists. Nursing home personnel in all occupations had elevated seropositivity compared with hospital counterparts. Additional mitigation strategies are needed to protect nursing home personnel from infection, regardless of occupation. 相似文献
135.
136.
Seema Irfan Mohammad Zeeshan Salima Rattani Joveria Farooqi Sadia Shakoor Rumina Hasan Afia Zafar 《Emerging infectious diseases》2021,27(3):936
We evaluated Salmonella enterica serotype Typhi strains isolated from all body sites in Pakistan during 2013–2018. Despite an increase in overall number of localized, extensively drug-resistant Salmonella Typhi in organ infections during 2018, there was no increase in the proportion of such isolates in comparison with non–extensively drug-resistant isolates. 相似文献
137.
Jos María Robaina-Bordn Cristina Carranza-Rodríguez Michele Hernndez-Cabrera Margarita Bolaos-Rivero Elena Pisos-lamo Nieves Jan-Snchez Araceli Hernndez-Betancor Laura Surez-Hormiga Jos Luis Prez-Arellano 《Emerging infectious diseases》2021,27(2):570
To document the epidemiology, clinical features, and outcomes of murine typhus patients in the Canary Islands (Spain), we analyzed data that were retrospectively collected for 16 years for 221 patients. Murine typhus in the Canary Islands is characterized by a high rate of complications (31.6%), mainly liver, lung, kidney or central nervous system involvement. 相似文献
138.
Meiling Zhang Jienan Zhou Senquan Jia Xiaonan Zhao Yaoyao Chen Yanhong Sun Zhaosheng Liu Xiaofang Zhou Duo Li Chunrui Luo Yong Zhang Violet Magoma Onsongo Yong Shao Xiaoqing Fu 《Emerging infectious diseases》2021,27(5):1543
To limit the spread of severe acute respiratory syndrome coronavirus 2, the government of China has been monitoring infected travelers and minimizing cold-chain contamination. However, other factors might contribute to recurring outbreaks. We analyze the role of undocumented migrants as potential transmitters of severe acute respiratory syndrome coronavirus 2 in China. 相似文献
139.
Hannah R. Meredith Emerson Arehart Kyra H. Grantz Alexander Beams Theresa Sheets Richard Nelson Yue Zhang Russell G. Vinik Darryl Barfuss Jacob C. Pettit Keegan McCaffrey Angela C. Dunn Michael Good Shannon Frattaroli Matthew H. Samore Justin Lessler Elizabeth C. Lee Lindsay T. Keegan 《Emerging infectious diseases》2021,27(5):1259
The coronavirus disease pandemic has highlighted the key role epidemiologic models play in supporting public health decision-making. In particular, these models provide estimates of outbreak potential when data are scarce and decision-making is critical and urgent. We document the integrated modeling response used in the US state of Utah early in the coronavirus disease pandemic, which brought together a diverse set of technical experts and public health and healthcare officials and led to an evidence-based response to the pandemic. We describe how we adapted a standard epidemiologic model; harmonized the outputs across modeling groups; and maintained a constant dialogue with policymakers at multiple levels of government to produce timely, evidence-based, and coordinated public health recommendations and interventions during the first wave of the pandemic. This framework continues to support the state’s response to ongoing outbreaks and can be applied in other settings to address unique public health challenges. 相似文献
140.
Jason K. Blackburn Ernest Kenu Franklin Asiedu-Bekoe Badu Sarkodie Ian T. Kracalik William A. Bower Robyn A. Stoddard Rita M. Traxler 《Emerging infectious diseases》2021,27(4):1216
The human cutaneous anthrax case-fatality rate is ≈1% when treated, 5%–20% when untreated. We report high case-fatality rates (median 35.0%; 95% CI 21.1%–66.7%) during 2005–2016 linked to livestock handling in northern Ghana, where veterinary resources are limited. Livestock vaccination and access to human treatment should be evaluated. 相似文献