Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1956 1
1991 1
2012 1
2013 1
2018 1
2020 1
2021 2
2023 0

Text availability

Article attribute

Article type

Publication date

Search Results

7 results

Results by year

Filters applied: . Clear all
Page 1
A Public Health Antibody Screening Indicates a 6-Fold Higher SARS-CoV-2 Exposure Rate than Reported Cases in Children.
Hippich M, Holthaus L, Assfalg R, Zapardiel-Gonzalo J, Kapfelsperger H, Heigermoser M, Haupt F, Ewald DA, Welzhofer TC, Marcus BA, Heck S, Koelln A, Stock J, Voss F, Secchi M, Piemonti L, de la Rosa K, Protzer U, Boehmer M, Achenbach P, Lampasona V, Bonifacio E, Ziegler AG. Hippich M, et al. Among authors: holthaus l. Med. 2021 Feb 12;2(2):149-163.e4. doi: 10.1016/j.medj.2020.10.003. Epub 2020 Oct 29. Med. 2021. PMID: 33163984 Free PMC article.