Breaking a quotation over frames in beamer (using allowframebreaks)

Question

I am trying to have correct control of text flow over many pages which I establish by allowframebreaks in the custom frame slide in the Berkeley theme of beamer document class. The example code uses the package quotation where you can see that the content passes the page although \resizebox{\textheight}{!}. Similar complications occur in resizing figures to text height such that many lines of text is hidden, while the expected output is page break earlier, exposing all text.

\documentclass{beamer}
\usetheme{Berkeley} 
% http://tex.stackexchange.com/a/94632/13173
\newenvironment{slide}[1]
{\begin{frame}[environment=slide,allowframebreaks,fragile]
\frametitle{\insertsection-#1} %  Torbjørn T. Thank you!
}
{\end{frame}}

\begin{document}
\begin{slide}{Lorem}
\resizebox{\textheight}{!}{
\begin{quotation}
The elimination of CS can be achieved through implementation of various proven measures but requires technical support, funding and commitment among political forces, health officials, and public to prevent and treat CS cases and help countries reach their Millennium Development Goals. 
Stronger partnerships with clearly defined responsibilities should be developed among agencies responsible for national STI control, HIV/AIDS control, and making pregnancy safer initiatives to ensure universal coverage of CS control interventions. 
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS. 
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS. 
- Phiske, Hossain, Martin. 
\end{quotation}
}
\end{slide}
\end{document}

Answer 1

The allowframebreaks option can only break material which is not a single unit. In this case, the quotation environment in beamer is a 'color box', which is not breakable. As such, you cannot use the quotation environment here: you can see that by simply commenting it out.

\documentclass{beamer}
\begin{document}
\begin{frame}[allowframebreaks]{Lorem}
%\begin{quotation}
The elimination of CS can be achieved through implementation of various proven measures but requires technical support, funding and commitment among political forces, health officials, and public to prevent and treat CS cases and help countries reach their Millennium Development Goals. 
Stronger partnerships with clearly defined responsibilities should be developed among agencies responsible for national STI control, HIV/AIDS control, and making pregnancy safer initiatives to ensure universal coverage of CS control interventions. 
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS.
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS. 
- Phiske, Hossain, Martin. 
%\end{quotation}
\end{frame}
\end{document}

If you want to have the appearance of a quotation but have a break, you'll need to do it by hand:

\documentclass{beamer}
\begin{document}
\begin{frame}[allowframebreaks]{Lorem}
\begin{quotation}
The elimination of CS can be achieved through implementation of various proven measures but requires technical support, funding and commitment among political forces, health officials, and public to prevent and treat CS cases and help countries reach their Millennium Development Goals. 
Stronger partnerships with clearly defined responsibilities should be developed among agencies responsible for national STI control, HIV/AIDS control, and making pregnancy safer initiatives to ensure universal coverage of CS control interventions. 
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS.
\end{quotation}
\begin{quotation}
Clinicians should adhere to standardized protocols in evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce CS. Improved surveillance data and resources are needed for identification and follow-up of newborns at risk for CS. 
- Phiske, Hossain, Martin. 
\end{quotation}
\end{frame}
\end{document}