\documentclass[landscape]{article}
\usepackage[svgnames]{xcolor}
\usepackage{tikz}
\usetikzlibrary{backgrounds}
\begin{document}
\begin{tikzpicture}[scale=.5,
show background rectangle,
background rectangle/.style={fill=black},
color=white,help lines/.style={color=lightgray,line width=0.2pt}]
\draw (0,14) node[anchor=north west] {{\bf text}};
\draw (0,13.5) node[anchor=north west] {text};
\draw (0,13) node[anchor=north west] {text};
\draw (0,12.5) node[anchor=north west] {text};
\draw (0,12) node[anchor=north west] {text};
\draw (0,1) node[anchor=north west] {{\bf Deliberately left blank}};
% bounding box
\draw[style=help lines] (11,0.5) rectangle (12.5,14);
\draw[style=help lines] (11.75,0.5) rectangle (13.25,14);
\draw[style=help lines] (14,0.5) rectangle (15.5,14);
\draw[style=help lines] (14.75,0.5) rectangle (16.25,14);
\draw[style=help lines] (17,0.5) rectangle (18.5,14);
\draw[style=help lines] (17.75,0.5) rectangle (19.25,14);
\draw[style=help lines] (20,0.5) rectangle (21.5,14);
\draw[style=help lines] (20.75,0.5) rectangle (22.25,14);
\draw[style=help lines] (23,0.5) rectangle (24.5,14);
\draw[style=help lines] (23.75,0.5) rectangle (25.25,14);
\draw[style=help lines] (0,14) -- (26,14);
\draw[style=help lines] (0,11) -- (26,11);
\draw[style=help lines] (0,7.5) -- (26,7.5);
\draw[style=help lines] (0,3.5) -- (26,3.5);
\draw[style=help lines] (0,1) -- (26,1);
\draw (11,0.5) rectangle (26,14);
\draw (14,0.5) rectangle (23,14);
\draw (17,0.5) rectangle (20,14);
\draw (12.5,14) node[anchor=south] {Year 1};
\draw (15.5,14) node[anchor=south] {Year 2};
\draw (18.5,14) node[anchor=south] {Year 3};
\draw (21.5,14) node[anchor=south] {Year 4};
\draw (24.5,14) node[anchor=south] {Year 5};
% blocks
\filldraw[fill=Silver] (11,13) rectangle (13.25,13.5);
\filldraw[fill=Silver] (11.75,12.5) rectangle (16.25,13);
\filldraw[fill=Silver] (14,12) rectangle (17.75,12.5);
\filldraw[fill=Silver] (15.5,11.5) rectangle (20,12);
%\filldraw[fill=Silver] (17,11) rectangle (17.75,11.5);
\filldraw[fill=Silver] (13.25,10) rectangle (16.25,10.5);
\filldraw[fill=Silver] (14.75,9.5) rectangle (18.5,10);
\filldraw[fill=Silver] (17,9) rectangle (20.75,9.5);
\filldraw[fill=Silver] (18.5,8.5) rectangle (22.25,9);
%\filldraw[fill=Silver] (20.75,8) rectangle (20,8.5);
\filldraw[fill=Silver] (14,6.5) rectangle (20,7);
\filldraw[fill=Silver] (19.25,6) rectangle (24.5,6.5);
\filldraw[fill=Silver] (15.5,5.5) rectangle (17.75,6);
\filldraw[fill=Silver] (17.75,5) rectangle (20, 5.5);
\filldraw[fill=Silver] (20,4.5) rectangle (22.25,5);
\filldraw[fill=Silver] (22.25,4) rectangle (24.5,4.5);
\filldraw[fill=Silver] (11,2.5) rectangle (13.25,3);
\filldraw[fill=Silver] (13.25,2) rectangle (15.5,2.5);
\filldraw[fill=Silver] (15.5,1.5) rectangle (24.5, 2);
\filldraw[fill=Silver] (17.75,1) rectangle (24.5,1.5);
\filldraw[fill=Silver] (24.5,0.5) rectangle (26,1);
\end{tikzpicture}
\end{document}
\documentclass[tikz,border=12pt]{standalone}
\begin{document}
\begin{tikzpicture}
\path
(0,0) rectangle (8,6) [draw]
(0.5,5.5) node {$\emptyset$}
(2.5,2) coordinate (A) node[below] {3.4} ellipse (2 and 1.5) [draw]
coordinate (temp) at (2.5,2) ellipse (0.6 and 0.6) [draw]
(temp) +(0.5,-0.75) coordinate (B) node[below left] {5.1} -- (5,3.5) -- (5.5,3.5) node[right,text width=1.5]{Environment\\contact}
(A) -- (4.5,4.5) -- (5,4.5) node[right]{Patient contact} ;
\end{tikzpicture}
\end{document}
Best Answer
You can change colors, labels, etcetera, easily as described in the package documentation.